Home / 28,461.05-42,687.79-8,470.18

Finding the Fourth Proportional to 28,461.05, 42,687.79 and 8,470.18

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Solution

The fourth proportional to 28,461.05, 42,687.79 and 8,470.18 is: 12,704.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,461.05 : 42,687.79 = 8,470.18 : x
  2. Step 2: Convert to fraction form
    28,461.05/42,687.79 = 8,470.18/x
  3. Step 3: Cross multiply
    28,461.05x = 42,687.79 × 8,470.18
  4. Step 4: Simplify right side
    28,461.05x = 361,573,137.21
  5. Step 5: Solve for x
    x = 361,573,137.21/28,461.05
  6. Step 6: Final answer
    x = 12,704.14

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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.