Home / 13,167.52-18,171.22-7,862.22

Finding the Fourth Proportional to 13,167.52, 18,171.22 and 7,862.22

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Solution

The fourth proportional to 13,167.52, 18,171.22 and 7,862.22 is: 10,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.52 : 18,171.22 = 7,862.22 : x
  2. Step 2: Convert to fraction form
    13,167.52/18,171.22 = 7,862.22/x
  3. Step 3: Cross multiply
    13,167.52x = 18,171.22 × 7,862.22
  4. Step 4: Simplify right side
    13,167.52x = 142,866,129.31
  5. Step 5: Solve for x
    x = 142,866,129.31/13,167.52
  6. Step 6: Final answer
    x = 10,849.89

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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.