Home / 21,565.60-32,335.12-8,402.64

Finding the Fourth Proportional to 21,565.60, 32,335.12 and 8,402.64

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Solution

The fourth proportional to 21,565.60, 32,335.12 and 8,402.64 is: 12,598.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.60 : 32,335.12 = 8,402.64 : x
  2. Step 2: Convert to fraction form
    21,565.60/32,335.12 = 8,402.64/x
  3. Step 3: Cross multiply
    21,565.60x = 32,335.12 × 8,402.64
  4. Step 4: Simplify right side
    21,565.60x = 271,700,372.72
  5. Step 5: Solve for x
    x = 271,700,372.72/21,565.60
  6. Step 6: Final answer
    x = 12,598.79

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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.