Home / 13,288.19-18,337.05-7,319.70

Finding the Fourth Proportional to 13,288.19, 18,337.05 and 7,319.70

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Solution

The fourth proportional to 13,288.19, 18,337.05 and 7,319.70 is: 10,100.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.19 : 18,337.05 = 7,319.70 : x
  2. Step 2: Convert to fraction form
    13,288.19/18,337.05 = 7,319.70/x
  3. Step 3: Cross multiply
    13,288.19x = 18,337.05 × 7,319.70
  4. Step 4: Simplify right side
    13,288.19x = 134,221,704.89
  5. Step 5: Solve for x
    x = 134,221,704.89/13,288.19
  6. Step 6: Final answer
    x = 10,100.83

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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.