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Finding the Fourth Proportional to 28,632.05, 42,951.02 and 9,912.05

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Solution

The fourth proportional to 28,632.05, 42,951.02 and 9,912.05 is: 14,869.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,632.05 : 42,951.02 = 9,912.05 : x
  2. Step 2: Convert to fraction form
    28,632.05/42,951.02 = 9,912.05/x
  3. Step 3: Cross multiply
    28,632.05x = 42,951.02 × 9,912.05
  4. Step 4: Simplify right side
    28,632.05x = 425,732,393.48
  5. Step 5: Solve for x
    x = 425,732,393.48/28,632.05
  6. Step 6: Final answer
    x = 14,869.09

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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.