Home / 12,938.13-17,860.23-8,162.37

Finding the Fourth Proportional to 12,938.13, 17,860.23 and 8,162.37

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Solution

The fourth proportional to 12,938.13, 17,860.23 and 8,162.37 is: 11,267.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.13 : 17,860.23 = 8,162.37 : x
  2. Step 2: Convert to fraction form
    12,938.13/17,860.23 = 8,162.37/x
  3. Step 3: Cross multiply
    12,938.13x = 17,860.23 × 8,162.37
  4. Step 4: Simplify right side
    12,938.13x = 145,781,805.55
  5. Step 5: Solve for x
    x = 145,781,805.55/12,938.13
  6. Step 6: Final answer
    x = 11,267.61

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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.