Home / 20,877.26-31,274.16-12,552.71

Finding the Fourth Proportional to 20,877.26, 31,274.16 and 12,552.71

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Solution

The fourth proportional to 20,877.26, 31,274.16 and 12,552.71 is: 18,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.26 : 31,274.16 = 12,552.71 : x
  2. Step 2: Convert to fraction form
    20,877.26/31,274.16 = 12,552.71/x
  3. Step 3: Cross multiply
    20,877.26x = 31,274.16 × 12,552.71
  4. Step 4: Simplify right side
    20,877.26x = 392,575,460.97
  5. Step 5: Solve for x
    x = 392,575,460.97/20,877.26
  6. Step 6: Final answer
    x = 18,803.97

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1.5x scale

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.