Home / 13,670.52-18,866.13-9,125.40

Finding the Fourth Proportional to 13,670.52, 18,866.13 and 9,125.40

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Solution

The fourth proportional to 13,670.52, 18,866.13 and 9,125.40 is: 12,593.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.52 : 18,866.13 = 9,125.40 : x
  2. Step 2: Convert to fraction form
    13,670.52/18,866.13 = 9,125.40/x
  3. Step 3: Cross multiply
    13,670.52x = 18,866.13 × 9,125.40
  4. Step 4: Simplify right side
    13,670.52x = 172,160,982.70
  5. Step 5: Solve for x
    x = 172,160,982.70/13,670.52
  6. Step 6: Final answer
    x = 12,593.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.