Home / 28,210.32-38,912.61-18,151.86

Finding the Fourth Proportional to 28,210.32, 38,912.61 and 18,151.86

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Solution

The fourth proportional to 28,210.32, 38,912.61 and 18,151.86 is: 25,038.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.32 : 38,912.61 = 18,151.86 : x
  2. Step 2: Convert to fraction form
    28,210.32/38,912.61 = 18,151.86/x
  3. Step 3: Cross multiply
    28,210.32x = 38,912.61 × 18,151.86
  4. Step 4: Simplify right side
    28,210.32x = 706,336,248.95
  5. Step 5: Solve for x
    x = 706,336,248.95/28,210.32
  6. Step 6: Final answer
    x = 25,038.22

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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.