Home / 28,885.20-43,327.80-18,862.80

Finding the Fourth Proportional to 28,885.20, 43,327.80 and 18,862.80

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Solution

The fourth proportional to 28,885.20, 43,327.80 and 18,862.80 is: 28,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.20 : 43,327.80 = 18,862.80 : x
  2. Step 2: Convert to fraction form
    28,885.20/43,327.80 = 18,862.80/x
  3. Step 3: Cross multiply
    28,885.20x = 43,327.80 × 18,862.80
  4. Step 4: Simplify right side
    28,885.20x = 817,283,625.84
  5. Step 5: Solve for x
    x = 817,283,625.84/28,885.20
  6. Step 6: Final answer
    x = 28,294.20

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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.