Home / 13,287.16-18,337.11-7,318.83

Finding the Fourth Proportional to 13,287.16, 18,337.11 and 7,318.83

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Solution

The fourth proportional to 13,287.16, 18,337.11 and 7,318.83 is: 10,100.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.16 : 18,337.11 = 7,318.83 : x
  2. Step 2: Convert to fraction form
    13,287.16/18,337.11 = 7,318.83/x
  3. Step 3: Cross multiply
    13,287.16x = 18,337.11 × 7,318.83
  4. Step 4: Simplify right side
    13,287.16x = 134,206,099.10
  5. Step 5: Solve for x
    x = 134,206,099.10/13,287.16
  6. Step 6: Final answer
    x = 10,100.44

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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.