Home / 30,546.15-42,155.38-17,121.72

Finding the Fourth Proportional to 30,546.15, 42,155.38 and 17,121.72

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Solution

The fourth proportional to 30,546.15, 42,155.38 and 17,121.72 is: 23,628.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,546.15 : 42,155.38 = 17,121.72 : x
  2. Step 2: Convert to fraction form
    30,546.15/42,155.38 = 17,121.72/x
  3. Step 3: Cross multiply
    30,546.15x = 42,155.38 × 17,121.72
  4. Step 4: Simplify right side
    30,546.15x = 721,772,612.85
  5. Step 5: Solve for x
    x = 721,772,612.85/30,546.15
  6. Step 6: Final answer
    x = 23,628.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.