Home / 19,808.10-27,338.76-12,640.24

Finding the Fourth Proportional to 19,808.10, 27,338.76 and 12,640.24

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Solution

The fourth proportional to 19,808.10, 27,338.76 and 12,640.24 is: 17,445.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,808.10 : 27,338.76 = 12,640.24 : x
  2. Step 2: Convert to fraction form
    19,808.10/27,338.76 = 12,640.24/x
  3. Step 3: Cross multiply
    19,808.10x = 27,338.76 × 12,640.24
  4. Step 4: Simplify right side
    19,808.10x = 345,568,487.70
  5. Step 5: Solve for x
    x = 345,568,487.70/19,808.10
  6. Step 6: Final answer
    x = 17,445.82

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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.