Home / 18,288.40-27,432.60-16,862.80

Finding the Fourth Proportional to 18,288.40, 27,432.60 and 16,862.80

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Solution

The fourth proportional to 18,288.40, 27,432.60 and 16,862.80 is: 25,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.40 : 27,432.60 = 16,862.80 : x
  2. Step 2: Convert to fraction form
    18,288.40/27,432.60 = 16,862.80/x
  3. Step 3: Cross multiply
    18,288.40x = 27,432.60 × 16,862.80
  4. Step 4: Simplify right side
    18,288.40x = 462,590,447.28
  5. Step 5: Solve for x
    x = 462,590,447.28/18,288.40
  6. Step 6: Final answer
    x = 25,294.20

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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.