Home / 20,454.48-30,627-11,677.32

Finding the Fourth Proportional to 20,454.48, 30,627 and 11,677.32

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Solution

The fourth proportional to 20,454.48, 30,627 and 11,677.32 is: 17,484.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.48 : 30,627 = 11,677.32 : x
  2. Step 2: Convert to fraction form
    20,454.48/30,627 = 11,677.32/x
  3. Step 3: Cross multiply
    20,454.48x = 30,627 × 11,677.32
  4. Step 4: Simplify right side
    20,454.48x = 357,641,279.64
  5. Step 5: Solve for x
    x = 357,641,279.64/20,454.48
  6. Step 6: Final answer
    x = 17,484.74

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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.