Home / 13,586.10-20,385.18-8,654.46

Finding the Fourth Proportional to 13,586.10, 20,385.18 and 8,654.46

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Solution

The fourth proportional to 13,586.10, 20,385.18 and 8,654.46 is: 12,985.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.10 : 20,385.18 = 8,654.46 : x
  2. Step 2: Convert to fraction form
    13,586.10/20,385.18 = 8,654.46/x
  3. Step 3: Cross multiply
    13,586.10x = 20,385.18 × 8,654.46
  4. Step 4: Simplify right side
    13,586.10x = 176,422,724.90
  5. Step 5: Solve for x
    x = 176,422,724.90/13,586.10
  6. Step 6: Final answer
    x = 12,985.53

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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.