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Finding the Fourth Proportional to 20,666.52, 31,002.06 and 6,623.22

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Solution

The fourth proportional to 20,666.52, 31,002.06 and 6,623.22 is: 9,935.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.52 : 31,002.06 = 6,623.22 : x
  2. Step 2: Convert to fraction form
    20,666.52/31,002.06 = 6,623.22/x
  3. Step 3: Cross multiply
    20,666.52x = 31,002.06 × 6,623.22
  4. Step 4: Simplify right side
    20,666.52x = 205,333,463.83
  5. Step 5: Solve for x
    x = 205,333,463.83/20,666.52
  6. Step 6: Final answer
    x = 9,935.56

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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.