Home / 23,177.89-31,968.49-15,217.21

Finding the Fourth Proportional to 23,177.89, 31,968.49 and 15,217.21

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Solution

The fourth proportional to 23,177.89, 31,968.49 and 15,217.21 is: 20,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,177.89 : 31,968.49 = 15,217.21 : x
  2. Step 2: Convert to fraction form
    23,177.89/31,968.49 = 15,217.21/x
  3. Step 3: Cross multiply
    23,177.89x = 31,968.49 × 15,217.21
  4. Step 4: Simplify right side
    23,177.89x = 486,471,225.71
  5. Step 5: Solve for x
    x = 486,471,225.71/23,177.89
  6. Step 6: Final answer
    x = 20,988.59

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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.