Home / 28,319.52-39,080.08-15,572.71

Finding the Fourth Proportional to 28,319.52, 39,080.08 and 15,572.71

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Solution

The fourth proportional to 28,319.52, 39,080.08 and 15,572.71 is: 21,489.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.52 : 39,080.08 = 15,572.71 : x
  2. Step 2: Convert to fraction form
    28,319.52/39,080.08 = 15,572.71/x
  3. Step 3: Cross multiply
    28,319.52x = 39,080.08 × 15,572.71
  4. Step 4: Simplify right side
    28,319.52x = 608,582,752.62
  5. Step 5: Solve for x
    x = 608,582,752.62/28,319.52
  6. Step 6: Final answer
    x = 21,489.87

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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.