Home / 12,989.76-17,842.14-12,740.70

Finding the Fourth Proportional to 12,989.76, 17,842.14 and 12,740.70

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Solution

The fourth proportional to 12,989.76, 17,842.14 and 12,740.70 is: 17,500.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.76 : 17,842.14 = 12,740.70 : x
  2. Step 2: Convert to fraction form
    12,989.76/17,842.14 = 12,740.70/x
  3. Step 3: Cross multiply
    12,989.76x = 17,842.14 × 12,740.70
  4. Step 4: Simplify right side
    12,989.76x = 227,321,353.10
  5. Step 5: Solve for x
    x = 227,321,353.10/12,989.76
  6. Step 6: Final answer
    x = 17,500.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.