Home / 28,252.25-38,988-15,505.65

Finding the Fourth Proportional to 28,252.25, 38,988 and 15,505.65

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Solution

The fourth proportional to 28,252.25, 38,988 and 15,505.65 is: 21,397.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.25 : 38,988 = 15,505.65 : x
  2. Step 2: Convert to fraction form
    28,252.25/38,988 = 15,505.65/x
  3. Step 3: Cross multiply
    28,252.25x = 38,988 × 15,505.65
  4. Step 4: Simplify right side
    28,252.25x = 604,534,282.20
  5. Step 5: Solve for x
    x = 604,534,282.20/28,252.25
  6. Step 6: Final answer
    x = 21,397.74

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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.