Home / 13,353.52-18,422.28-7,686.91

Finding the Fourth Proportional to 13,353.52, 18,422.28 and 7,686.91

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Solution

The fourth proportional to 13,353.52, 18,422.28 and 7,686.91 is: 10,604.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.52 : 18,422.28 = 7,686.91 : x
  2. Step 2: Convert to fraction form
    13,353.52/18,422.28 = 7,686.91/x
  3. Step 3: Cross multiply
    13,353.52x = 18,422.28 × 7,686.91
  4. Step 4: Simplify right side
    13,353.52x = 141,610,391.13
  5. Step 5: Solve for x
    x = 141,610,391.13/13,353.52
  6. Step 6: Final answer
    x = 10,604.73

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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.