Home / 13,279.70-18,321.84-7,536.20

Finding the Fourth Proportional to 13,279.70, 18,321.84 and 7,536.20

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Solution

The fourth proportional to 13,279.70, 18,321.84 and 7,536.20 is: 10,397.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.70 : 18,321.84 = 7,536.20 : x
  2. Step 2: Convert to fraction form
    13,279.70/18,321.84 = 7,536.20/x
  3. Step 3: Cross multiply
    13,279.70x = 18,321.84 × 7,536.20
  4. Step 4: Simplify right side
    13,279.70x = 138,077,050.61
  5. Step 5: Solve for x
    x = 138,077,050.61/13,279.70
  6. Step 6: Final answer
    x = 10,397.60

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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.