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Finding the Fourth Proportional to 13,342.08, 20,000.16 and 8,659.20

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Solution

The fourth proportional to 13,342.08, 20,000.16 and 8,659.20 is: 12,980.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.08 : 20,000.16 = 8,659.20 : x
  2. Step 2: Convert to fraction form
    13,342.08/20,000.16 = 8,659.20/x
  3. Step 3: Cross multiply
    13,342.08x = 20,000.16 × 8,659.20
  4. Step 4: Simplify right side
    13,342.08x = 173,185,385.47
  5. Step 5: Solve for x
    x = 173,185,385.47/13,342.08
  6. Step 6: Final answer
    x = 12,980.39

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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.