Home / 20,995.38-28,972.68-12,042.36

Finding the Fourth Proportional to 20,995.38, 28,972.68 and 12,042.36

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Solution

The fourth proportional to 20,995.38, 28,972.68 and 12,042.36 is: 16,617.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.38 : 28,972.68 = 12,042.36 : x
  2. Step 2: Convert to fraction form
    20,995.38/28,972.68 = 12,042.36/x
  3. Step 3: Cross multiply
    20,995.38x = 28,972.68 × 12,042.36
  4. Step 4: Simplify right side
    20,995.38x = 348,899,442.72
  5. Step 5: Solve for x
    x = 348,899,442.72/20,995.38
  6. Step 6: Final answer
    x = 16,617.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.