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Finding the Fourth Proportional to 15,398.86, 21,250.65 and 9,023.92

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Solution

The fourth proportional to 15,398.86, 21,250.65 and 9,023.92 is: 12,453.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.86 : 21,250.65 = 9,023.92 : x
  2. Step 2: Convert to fraction form
    15,398.86/21,250.65 = 9,023.92/x
  3. Step 3: Cross multiply
    15,398.86x = 21,250.65 × 9,023.92
  4. Step 4: Simplify right side
    15,398.86x = 191,764,165.55
  5. Step 5: Solve for x
    x = 191,764,165.55/15,398.86
  6. Step 6: Final answer
    x = 12,453.14

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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.