Home / 15,781.42-23,672.40-13,179.16

Finding the Fourth Proportional to 15,781.42, 23,672.40 and 13,179.16

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Solution

The fourth proportional to 15,781.42, 23,672.40 and 13,179.16 is: 19,768.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.42 : 23,672.40 = 13,179.16 : x
  2. Step 2: Convert to fraction form
    15,781.42/23,672.40 = 13,179.16/x
  3. Step 3: Cross multiply
    15,781.42x = 23,672.40 × 13,179.16
  4. Step 4: Simplify right side
    15,781.42x = 311,982,347.18
  5. Step 5: Solve for x
    x = 311,982,347.18/15,781.42
  6. Step 6: Final answer
    x = 19,768.97

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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.