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Finding the Fourth Proportional to 28,962.80, 43,251.46 and 28,649.68

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Solution

The fourth proportional to 28,962.80, 43,251.46 and 28,649.68 is: 42,783.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,962.80 : 43,251.46 = 28,649.68 : x
  2. Step 2: Convert to fraction form
    28,962.80/43,251.46 = 28,649.68/x
  3. Step 3: Cross multiply
    28,962.80x = 43,251.46 × 28,649.68
  4. Step 4: Simplify right side
    28,962.80x = 1,239,140,488.53
  5. Step 5: Solve for x
    x = 1,239,140,488.53/28,962.80
  6. Step 6: Final answer
    x = 42,783.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.