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Finding the Fourth Proportional to 20,447.01, 30,666.95 and 5,454.32

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Solution

The fourth proportional to 20,447.01, 30,666.95 and 5,454.32 is: 8,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.01 : 30,666.95 = 5,454.32 : x
  2. Step 2: Convert to fraction form
    20,447.01/30,666.95 = 5,454.32/x
  3. Step 3: Cross multiply
    20,447.01x = 30,666.95 × 5,454.32
  4. Step 4: Simplify right side
    20,447.01x = 167,267,178.12
  5. Step 5: Solve for x
    x = 167,267,178.12/20,447.01
  6. Step 6: Final answer
    x = 8,180.52

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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.