Home / 20,537.15-28,279.13-16,938.72

Finding the Fourth Proportional to 20,537.15, 28,279.13 and 16,938.72

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Solution

The fourth proportional to 20,537.15, 28,279.13 and 16,938.72 is: 23,324.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.15 : 28,279.13 = 16,938.72 : x
  2. Step 2: Convert to fraction form
    20,537.15/28,279.13 = 16,938.72/x
  3. Step 3: Cross multiply
    20,537.15x = 28,279.13 × 16,938.72
  4. Step 4: Simplify right side
    20,537.15x = 479,012,180.22
  5. Step 5: Solve for x
    x = 479,012,180.22/20,537.15
  6. Step 6: Final answer
    x = 23,324.19

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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.