Home / 13,288.33-18,337.24-7,318.88

Finding the Fourth Proportional to 13,288.33, 18,337.24 and 7,318.88

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Solution

The fourth proportional to 13,288.33, 18,337.24 and 7,318.88 is: 10,099.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.33 : 18,337.24 = 7,318.88 : x
  2. Step 2: Convert to fraction form
    13,288.33/18,337.24 = 7,318.88/x
  3. Step 3: Cross multiply
    13,288.33x = 18,337.24 × 7,318.88
  4. Step 4: Simplify right side
    13,288.33x = 134,208,055.72
  5. Step 5: Solve for x
    x = 134,208,055.72/13,288.33
  6. Step 6: Final answer
    x = 10,099.69

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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.