Home / 28,147.02-38,841.18-15,397.80

Finding the Fourth Proportional to 28,147.02, 38,841.18 and 15,397.80

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Solution

The fourth proportional to 28,147.02, 38,841.18 and 15,397.80 is: 21,248.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.02 : 38,841.18 = 15,397.80 : x
  2. Step 2: Convert to fraction form
    28,147.02/38,841.18 = 15,397.80/x
  3. Step 3: Cross multiply
    28,147.02x = 38,841.18 × 15,397.80
  4. Step 4: Simplify right side
    28,147.02x = 598,068,721.40
  5. Step 5: Solve for x
    x = 598,068,721.40/28,147.02
  6. Step 6: Final answer
    x = 21,248.03

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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.