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Finding the Fourth Proportional to 28,966.80, 43,377.30 and 19,052.40

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Solution

The fourth proportional to 28,966.80, 43,377.30 and 19,052.40 is: 28,530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,966.80 : 43,377.30 = 19,052.40 : x
  2. Step 2: Convert to fraction form
    28,966.80/43,377.30 = 19,052.40/x
  3. Step 3: Cross multiply
    28,966.80x = 43,377.30 × 19,052.40
  4. Step 4: Simplify right side
    28,966.80x = 826,441,670.52
  5. Step 5: Solve for x
    x = 826,441,670.52/28,966.80
  6. Step 6: Final answer
    x = 28,530.65

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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.