Home / 21,167.40-31,718.70-17,862.60

Finding the Fourth Proportional to 21,167.40, 31,718.70 and 17,862.60

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Solution

The fourth proportional to 21,167.40, 31,718.70 and 17,862.60 is: 26,766.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.40 : 31,718.70 = 17,862.60 : x
  2. Step 2: Convert to fraction form
    21,167.40/31,718.70 = 17,862.60/x
  3. Step 3: Cross multiply
    21,167.40x = 31,718.70 × 17,862.60
  4. Step 4: Simplify right side
    21,167.40x = 566,578,450.62
  5. Step 5: Solve for x
    x = 566,578,450.62/21,167.40
  6. Step 6: Final answer
    x = 26,766.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.