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Finding the Fourth Proportional to 28,531.16, 42,801.36 and 8,805.10

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Solution

The fourth proportional to 28,531.16, 42,801.36 and 8,805.10 is: 13,209.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.16 : 42,801.36 = 8,805.10 : x
  2. Step 2: Convert to fraction form
    28,531.16/42,801.36 = 8,805.10/x
  3. Step 3: Cross multiply
    28,531.16x = 42,801.36 × 8,805.10
  4. Step 4: Simplify right side
    28,531.16x = 376,870,254.94
  5. Step 5: Solve for x
    x = 376,870,254.94/28,531.16
  6. Step 6: Final answer
    x = 13,209.08

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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.