Home / 20,229.07-27,905.10-12,673.78

Finding the Fourth Proportional to 20,229.07, 27,905.10 and 12,673.78

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Solution

The fourth proportional to 20,229.07, 27,905.10 and 12,673.78 is: 17,482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,229.07 : 27,905.10 = 12,673.78 : x
  2. Step 2: Convert to fraction form
    20,229.07/27,905.10 = 12,673.78/x
  3. Step 3: Cross multiply
    20,229.07x = 27,905.10 × 12,673.78
  4. Step 4: Simplify right side
    20,229.07x = 353,663,098.28
  5. Step 5: Solve for x
    x = 353,663,098.28/20,229.07
  6. Step 6: Final answer
    x = 17,482.91

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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.