Home / 28,264.80-42,397.88-8,543.28

Finding the Fourth Proportional to 28,264.80, 42,397.88 and 8,543.28

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Solution

The fourth proportional to 28,264.80, 42,397.88 and 8,543.28 is: 12,815.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.80 : 42,397.88 = 8,543.28 : x
  2. Step 2: Convert to fraction form
    28,264.80/42,397.88 = 8,543.28/x
  3. Step 3: Cross multiply
    28,264.80x = 42,397.88 × 8,543.28
  4. Step 4: Simplify right side
    28,264.80x = 362,216,917.53
  5. Step 5: Solve for x
    x = 362,216,917.53/28,264.80
  6. Step 6: Final answer
    x = 12,815.12

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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.