Home / 13,247.12-18,279.96-7,658.48

Finding the Fourth Proportional to 13,247.12, 18,279.96 and 7,658.48

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Solution

The fourth proportional to 13,247.12, 18,279.96 and 7,658.48 is: 10,568.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.12 : 18,279.96 = 7,658.48 : x
  2. Step 2: Convert to fraction form
    13,247.12/18,279.96 = 7,658.48/x
  3. Step 3: Cross multiply
    13,247.12x = 18,279.96 × 7,658.48
  4. Step 4: Simplify right side
    13,247.12x = 139,996,708.06
  5. Step 5: Solve for x
    x = 139,996,708.06/13,247.12
  6. Step 6: Final answer
    x = 10,568.09

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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.