Home / 20,330.76-28,058.90-12,374.13

Finding the Fourth Proportional to 20,330.76, 28,058.90 and 12,374.13

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Solution

The fourth proportional to 20,330.76, 28,058.90 and 12,374.13 is: 17,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.76 : 28,058.90 = 12,374.13 : x
  2. Step 2: Convert to fraction form
    20,330.76/28,058.90 = 12,374.13/x
  3. Step 3: Cross multiply
    20,330.76x = 28,058.90 × 12,374.13
  4. Step 4: Simplify right side
    20,330.76x = 347,204,414.39
  5. Step 5: Solve for x
    x = 347,204,414.39/20,330.76
  6. Step 6: Final answer
    x = 17,077.79

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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.