Home / 13,324.13-18,386.30-7,658.90

Finding the Fourth Proportional to 13,324.13, 18,386.30 and 7,658.90

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Solution

The fourth proportional to 13,324.13, 18,386.30 and 7,658.90 is: 10,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.13 : 18,386.30 = 7,658.90 : x
  2. Step 2: Convert to fraction form
    13,324.13/18,386.30 = 7,658.90/x
  3. Step 3: Cross multiply
    13,324.13x = 18,386.30 × 7,658.90
  4. Step 4: Simplify right side
    13,324.13x = 140,818,741.14
  5. Step 5: Solve for x
    x = 140,818,741.14/13,324.13
  6. Step 6: Final answer
    x = 10,568.70

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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.