Home / 13,288.38-18,337.14-7,319.72

Finding the Fourth Proportional to 13,288.38, 18,337.14 and 7,319.72

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Solution

The fourth proportional to 13,288.38, 18,337.14 and 7,319.72 is: 10,100.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.38 : 18,337.14 = 7,319.72 : x
  2. Step 2: Convert to fraction form
    13,288.38/18,337.14 = 7,319.72/x
  3. Step 3: Cross multiply
    13,288.38x = 18,337.14 × 7,319.72
  4. Step 4: Simplify right side
    13,288.38x = 134,222,638.72
  5. Step 5: Solve for x
    x = 134,222,638.72/13,288.38
  6. Step 6: Final answer
    x = 10,100.75

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Similar ratio
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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.