Home / 28,217.58-38,940.38-15,470.96

Finding the Fourth Proportional to 28,217.58, 38,940.38 and 15,470.96

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Solution

The fourth proportional to 28,217.58, 38,940.38 and 15,470.96 is: 21,349.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.58 : 38,940.38 = 15,470.96 : x
  2. Step 2: Convert to fraction form
    28,217.58/38,940.38 = 15,470.96/x
  3. Step 3: Cross multiply
    28,217.58x = 38,940.38 × 15,470.96
  4. Step 4: Simplify right side
    28,217.58x = 602,445,002.41
  5. Step 5: Solve for x
    x = 602,445,002.41/28,217.58
  6. Step 6: Final answer
    x = 21,349.99

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Half scale
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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.