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Finding the Fourth Proportional to 28,692.80, 43,046.15 and 9,970.13

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Solution

The fourth proportional to 28,692.80, 43,046.15 and 9,970.13 is: 14,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.80 : 43,046.15 = 9,970.13 : x
  2. Step 2: Convert to fraction form
    28,692.80/43,046.15 = 9,970.13/x
  3. Step 3: Cross multiply
    28,692.80x = 43,046.15 × 9,970.13
  4. Step 4: Simplify right side
    28,692.80x = 429,175,446.42
  5. Step 5: Solve for x
    x = 429,175,446.42/28,692.80
  6. Step 6: Final answer
    x = 14,957.60

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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.