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Finding the Fourth Proportional to 20,710.11, 31,066.18 and 5,921.19

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Solution

The fourth proportional to 20,710.11, 31,066.18 and 5,921.19 is: 8,882.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.11 : 31,066.18 = 5,921.19 : x
  2. Step 2: Convert to fraction form
    20,710.11/31,066.18 = 5,921.19/x
  3. Step 3: Cross multiply
    20,710.11x = 31,066.18 × 5,921.19
  4. Step 4: Simplify right side
    20,710.11x = 183,948,754.35
  5. Step 5: Solve for x
    x = 183,948,754.35/20,710.11
  6. Step 6: Final answer
    x = 8,882.08

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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.