Home / 13,520.10-20,287.79-7,279.98

Finding the Fourth Proportional to 13,520.10, 20,287.79 and 7,279.98

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Solution

The fourth proportional to 13,520.10, 20,287.79 and 7,279.98 is: 10,924.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.10 : 20,287.79 = 7,279.98 : x
  2. Step 2: Convert to fraction form
    13,520.10/20,287.79 = 7,279.98/x
  3. Step 3: Cross multiply
    13,520.10x = 20,287.79 × 7,279.98
  4. Step 4: Simplify right side
    13,520.10x = 147,694,594.67
  5. Step 5: Solve for x
    x = 147,694,594.67/13,520.10
  6. Step 6: Final answer
    x = 10,924.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.