Home / 13,123.17-18,110.13-7,154.79

Finding the Fourth Proportional to 13,123.17, 18,110.13 and 7,154.79

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Solution

The fourth proportional to 13,123.17, 18,110.13 and 7,154.79 is: 9,873.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.17 : 18,110.13 = 7,154.79 : x
  2. Step 2: Convert to fraction form
    13,123.17/18,110.13 = 7,154.79/x
  3. Step 3: Cross multiply
    13,123.17x = 18,110.13 × 7,154.79
  4. Step 4: Simplify right side
    13,123.17x = 129,574,177.02
  5. Step 5: Solve for x
    x = 129,574,177.02/13,123.17
  6. Step 6: Final answer
    x = 9,873.69

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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.