Home / 13,288.20-18,337.84-7,319.90

Finding the Fourth Proportional to 13,288.20, 18,337.84 and 7,319.90

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Solution

The fourth proportional to 13,288.20, 18,337.84 and 7,319.90 is: 10,101.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.20 : 18,337.84 = 7,319.90 : x
  2. Step 2: Convert to fraction form
    13,288.20/18,337.84 = 7,319.90/x
  3. Step 3: Cross multiply
    13,288.20x = 18,337.84 × 7,319.90
  4. Step 4: Simplify right side
    13,288.20x = 134,231,155.02
  5. Step 5: Solve for x
    x = 134,231,155.02/13,288.20
  6. Step 6: Final answer
    x = 10,101.53

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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.