Home / 28,146.70-42,214.65-8,425.90

Finding the Fourth Proportional to 28,146.70, 42,214.65 and 8,425.90

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Solution

The fourth proportional to 28,146.70, 42,214.65 and 8,425.90 is: 12,637.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.70 : 42,214.65 = 8,425.90 : x
  2. Step 2: Convert to fraction form
    28,146.70/42,214.65 = 8,425.90/x
  3. Step 3: Cross multiply
    28,146.70x = 42,214.65 × 8,425.90
  4. Step 4: Simplify right side
    28,146.70x = 355,696,419.44
  5. Step 5: Solve for x
    x = 355,696,419.44/28,146.70
  6. Step 6: Final answer
    x = 12,637.23

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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.