Home / 20,127.52-27,770.29-12,581.50

Finding the Fourth Proportional to 20,127.52, 27,770.29 and 12,581.50

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Solution

The fourth proportional to 20,127.52, 27,770.29 and 12,581.50 is: 17,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.52 : 27,770.29 = 12,581.50 : x
  2. Step 2: Convert to fraction form
    20,127.52/27,770.29 = 12,581.50/x
  3. Step 3: Cross multiply
    20,127.52x = 27,770.29 × 12,581.50
  4. Step 4: Simplify right side
    20,127.52x = 349,391,903.64
  5. Step 5: Solve for x
    x = 349,391,903.64/20,127.52
  6. Step 6: Final answer
    x = 17,358.91

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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.