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Finding the Fourth Proportional to 28,347.66, 42,524.97 and 9,630.78

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Solution

The fourth proportional to 28,347.66, 42,524.97 and 9,630.78 is: 14,447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347.66 : 42,524.97 = 9,630.78 : x
  2. Step 2: Convert to fraction form
    28,347.66/42,524.97 = 9,630.78/x
  3. Step 3: Cross multiply
    28,347.66x = 42,524.97 × 9,630.78
  4. Step 4: Simplify right side
    28,347.66x = 409,548,630.58
  5. Step 5: Solve for x
    x = 409,548,630.58/28,347.66
  6. Step 6: Final answer
    x = 14,447.35

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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.