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Finding the Fourth Proportional to 20,666.60, 31,001.10 and 5,876.60

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Solution

The fourth proportional to 20,666.60, 31,001.10 and 5,876.60 is: 8,815.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.60 : 31,001.10 = 5,876.60 : x
  2. Step 2: Convert to fraction form
    20,666.60/31,001.10 = 5,876.60/x
  3. Step 3: Cross multiply
    20,666.60x = 31,001.10 × 5,876.60
  4. Step 4: Simplify right side
    20,666.60x = 182,181,064.26
  5. Step 5: Solve for x
    x = 182,181,064.26/20,666.60
  6. Step 6: Final answer
    x = 8,815.24

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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.