Home / 28,185,904.30-42,278,856.45-21,467,440.30

Finding the Fourth Proportional to 28,185,904.30, 42,278,856.45 and 21,467,440.30

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Solution

The fourth proportional to 28,185,904.30, 42,278,856.45 and 21,467,440.30 is: 32,201,160.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185,904.30 : 42,278,856.45 = 21,467,440.30 : x
  2. Step 2: Convert to fraction form
    28,185,904.30/42,278,856.45 = 21,467,440.30/x
  3. Step 3: Cross multiply
    28,185,904.30x = 42,278,856.45 × 21,467,440.30
  4. Step 4: Simplify right side
    28,185,904.30x = 907,618,826,792,645
  5. Step 5: Solve for x
    x = 907,618,826,792,645/28,185,904.30
  6. Step 6: Final answer
    x = 32,201,160.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.