Home / 13,301.64-18,339.20-10,902.78

Finding the Fourth Proportional to 13,301.64, 18,339.20 and 10,902.78

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Solution

The fourth proportional to 13,301.64, 18,339.20 and 10,902.78 is: 15,031.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,301.64 : 18,339.20 = 10,902.78 : x
  2. Step 2: Convert to fraction form
    13,301.64/18,339.20 = 10,902.78/x
  3. Step 3: Cross multiply
    13,301.64x = 18,339.20 × 10,902.78
  4. Step 4: Simplify right side
    13,301.64x = 199,948,262.98
  5. Step 5: Solve for x
    x = 199,948,262.98/13,301.64
  6. Step 6: Final answer
    x = 15,031.85

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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.