Home / 13,247.34-18,281.40-7,278.87

Finding the Fourth Proportional to 13,247.34, 18,281.40 and 7,278.87

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Solution

The fourth proportional to 13,247.34, 18,281.40 and 7,278.87 is: 10,044.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.34 : 18,281.40 = 7,278.87 : x
  2. Step 2: Convert to fraction form
    13,247.34/18,281.40 = 7,278.87/x
  3. Step 3: Cross multiply
    13,247.34x = 18,281.40 × 7,278.87
  4. Step 4: Simplify right side
    13,247.34x = 133,067,934.02
  5. Step 5: Solve for x
    x = 133,067,934.02/13,247.34
  6. Step 6: Final answer
    x = 10,044.88

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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.