Home / 21,417.60-32,135.55-8,940.39

Finding the Fourth Proportional to 21,417.60, 32,135.55 and 8,940.39

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Solution

The fourth proportional to 21,417.60, 32,135.55 and 8,940.39 is: 13,414.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.60 : 32,135.55 = 8,940.39 : x
  2. Step 2: Convert to fraction form
    21,417.60/32,135.55 = 8,940.39/x
  3. Step 3: Cross multiply
    21,417.60x = 32,135.55 × 8,940.39
  4. Step 4: Simplify right side
    21,417.60x = 287,304,349.86
  5. Step 5: Solve for x
    x = 287,304,349.86/21,417.60
  6. Step 6: Final answer
    x = 13,414.40

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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.