Home / 28,188.32-38,901.15-15,613.04

Finding the Fourth Proportional to 28,188.32, 38,901.15 and 15,613.04

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Solution

The fourth proportional to 28,188.32, 38,901.15 and 15,613.04 is: 21,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.32 : 38,901.15 = 15,613.04 : x
  2. Step 2: Convert to fraction form
    28,188.32/38,901.15 = 15,613.04/x
  3. Step 3: Cross multiply
    28,188.32x = 38,901.15 × 15,613.04
  4. Step 4: Simplify right side
    28,188.32x = 607,365,211.00
  5. Step 5: Solve for x
    x = 607,365,211.00/28,188.32
  6. Step 6: Final answer
    x = 21,546.70

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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.