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Finding the Fourth Proportional to 21,602.08, 32,402.04 and 8,456.86

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Solution

The fourth proportional to 21,602.08, 32,402.04 and 8,456.86 is: 12,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.08 : 32,402.04 = 8,456.86 : x
  2. Step 2: Convert to fraction form
    21,602.08/32,402.04 = 8,456.86/x
  3. Step 3: Cross multiply
    21,602.08x = 32,402.04 × 8,456.86
  4. Step 4: Simplify right side
    21,602.08x = 274,019,515.99
  5. Step 5: Solve for x
    x = 274,019,515.99/21,602.08
  6. Step 6: Final answer
    x = 12,684.87

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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.