Home / 13,319.05-18,387.20-9,729.98

Finding the Fourth Proportional to 13,319.05, 18,387.20 and 9,729.98

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Solution

The fourth proportional to 13,319.05, 18,387.20 and 9,729.98 is: 13,432.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.05 : 18,387.20 = 9,729.98 : x
  2. Step 2: Convert to fraction form
    13,319.05/18,387.20 = 9,729.98/x
  3. Step 3: Cross multiply
    13,319.05x = 18,387.20 × 9,729.98
  4. Step 4: Simplify right side
    13,319.05x = 178,906,947.67
  5. Step 5: Solve for x
    x = 178,906,947.67/13,319.05
  6. Step 6: Final answer
    x = 13,432.41

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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.