Home / 15,764.90-21,748.14-9,387.86

Finding the Fourth Proportional to 15,764.90, 21,748.14 and 9,387.86

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Solution

The fourth proportional to 15,764.90, 21,748.14 and 9,387.86 is: 12,950.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.90 : 21,748.14 = 9,387.86 : x
  2. Step 2: Convert to fraction form
    15,764.90/21,748.14 = 9,387.86/x
  3. Step 3: Cross multiply
    15,764.90x = 21,748.14 × 9,387.86
  4. Step 4: Simplify right side
    15,764.90x = 204,168,493.58
  5. Step 5: Solve for x
    x = 204,168,493.58/15,764.90
  6. Step 6: Final answer
    x = 12,950.83

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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.