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Finding the Fourth Proportional to 28,772.76, 43,178.70 and 10,304.76

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Solution

The fourth proportional to 28,772.76, 43,178.70 and 10,304.76 is: 15,464.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,772.76 : 43,178.70 = 10,304.76 : x
  2. Step 2: Convert to fraction form
    28,772.76/43,178.70 = 10,304.76/x
  3. Step 3: Cross multiply
    28,772.76x = 43,178.70 × 10,304.76
  4. Step 4: Simplify right side
    28,772.76x = 444,946,140.61
  5. Step 5: Solve for x
    x = 444,946,140.61/28,772.76
  6. Step 6: Final answer
    x = 15,464.15

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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.