Home / 13,123.20-18,110.04-7,154.91

Finding the Fourth Proportional to 13,123.20, 18,110.04 and 7,154.91

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Solution

The fourth proportional to 13,123.20, 18,110.04 and 7,154.91 is: 9,873.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.20 : 18,110.04 = 7,154.91 : x
  2. Step 2: Convert to fraction form
    13,123.20/18,110.04 = 7,154.91/x
  3. Step 3: Cross multiply
    13,123.20x = 18,110.04 × 7,154.91
  4. Step 4: Simplify right side
    13,123.20x = 129,575,706.30
  5. Step 5: Solve for x
    x = 129,575,706.30/13,123.20
  6. Step 6: Final answer
    x = 9,873.79

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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.