Home / 13,287.60-18,337.01-7,319.48

Finding the Fourth Proportional to 13,287.60, 18,337.01 and 7,319.48

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Solution

The fourth proportional to 13,287.60, 18,337.01 and 7,319.48 is: 10,100.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.60 : 18,337.01 = 7,319.48 : x
  2. Step 2: Convert to fraction form
    13,287.60/18,337.01 = 7,319.48/x
  3. Step 3: Cross multiply
    13,287.60x = 18,337.01 × 7,319.48
  4. Step 4: Simplify right side
    13,287.60x = 134,217,377.95
  5. Step 5: Solve for x
    x = 134,217,377.95/13,287.60
  6. Step 6: Final answer
    x = 10,100.95

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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.