Home / 23,287.50-32,139.18-13,218.66

Finding the Fourth Proportional to 23,287.50, 32,139.18 and 13,218.66

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Solution

The fourth proportional to 23,287.50, 32,139.18 and 13,218.66 is: 18,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,287.50 : 32,139.18 = 13,218.66 : x
  2. Step 2: Convert to fraction form
    23,287.50/32,139.18 = 13,218.66/x
  3. Step 3: Cross multiply
    23,287.50x = 32,139.18 × 13,218.66
  4. Step 4: Simplify right side
    23,287.50x = 424,836,893.10
  5. Step 5: Solve for x
    x = 424,836,893.10/23,287.50
  6. Step 6: Final answer
    x = 18,243.13

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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.