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Finding the Fourth Proportional to 28,287.80, 42,330.90 and 24,630.20

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Solution

The fourth proportional to 28,287.80, 42,330.90 and 24,630.20 is: 36,857.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287.80 : 42,330.90 = 24,630.20 : x
  2. Step 2: Convert to fraction form
    28,287.80/42,330.90 = 24,630.20/x
  3. Step 3: Cross multiply
    28,287.80x = 42,330.90 × 24,630.20
  4. Step 4: Simplify right side
    28,287.80x = 1,042,618,533.18
  5. Step 5: Solve for x
    x = 1,042,618,533.18/28,287.80
  6. Step 6: Final answer
    x = 36,857.53

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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.