Home / 13,358.13-18,432.81-7,388.85

Finding the Fourth Proportional to 13,358.13, 18,432.81 and 7,388.85

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Solution

The fourth proportional to 13,358.13, 18,432.81 and 7,388.85 is: 10,195.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.13 : 18,432.81 = 7,388.85 : x
  2. Step 2: Convert to fraction form
    13,358.13/18,432.81 = 7,388.85/x
  3. Step 3: Cross multiply
    13,358.13x = 18,432.81 × 7,388.85
  4. Step 4: Simplify right side
    13,358.13x = 136,197,268.17
  5. Step 5: Solve for x
    x = 136,197,268.17/13,358.13
  6. Step 6: Final answer
    x = 10,195.83

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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.