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Finding the Fourth Proportional to 20,061.70, 30,104.07 and 15,666.82

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Solution

The fourth proportional to 20,061.70, 30,104.07 and 15,666.82 is: 23,509.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.70 : 30,104.07 = 15,666.82 : x
  2. Step 2: Convert to fraction form
    20,061.70/30,104.07 = 15,666.82/x
  3. Step 3: Cross multiply
    20,061.70x = 30,104.07 × 15,666.82
  4. Step 4: Simplify right side
    20,061.70x = 471,635,045.96
  5. Step 5: Solve for x
    x = 471,635,045.96/20,061.70
  6. Step 6: Final answer
    x = 23,509.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.