Home / 21,663.42-29,901.75-12,711.30

Finding the Fourth Proportional to 21,663.42, 29,901.75 and 12,711.30

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Solution

The fourth proportional to 21,663.42, 29,901.75 and 12,711.30 is: 17,545.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.42 : 29,901.75 = 12,711.30 : x
  2. Step 2: Convert to fraction form
    21,663.42/29,901.75 = 12,711.30/x
  3. Step 3: Cross multiply
    21,663.42x = 29,901.75 × 12,711.30
  4. Step 4: Simplify right side
    21,663.42x = 380,090,114.78
  5. Step 5: Solve for x
    x = 380,090,114.78/21,663.42
  6. Step 6: Final answer
    x = 17,545.25

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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.