Home / 28,615.68-42,901.20-11,964.96

Finding the Fourth Proportional to 28,615.68, 42,901.20 and 11,964.96

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Solution

The fourth proportional to 28,615.68, 42,901.20 and 11,964.96 is: 17,938.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.68 : 42,901.20 = 11,964.96 : x
  2. Step 2: Convert to fraction form
    28,615.68/42,901.20 = 11,964.96/x
  3. Step 3: Cross multiply
    28,615.68x = 42,901.20 × 11,964.96
  4. Step 4: Simplify right side
    28,615.68x = 513,311,141.95
  5. Step 5: Solve for x
    x = 513,311,141.95/28,615.68
  6. Step 6: Final answer
    x = 17,938.11

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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.