Home / 19,378.62-26,712.17-12,660.89

Finding the Fourth Proportional to 19,378.62, 26,712.17 and 12,660.89

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Solution

The fourth proportional to 19,378.62, 26,712.17 and 12,660.89 is: 17,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378.62 : 26,712.17 = 12,660.89 : x
  2. Step 2: Convert to fraction form
    19,378.62/26,712.17 = 12,660.89/x
  3. Step 3: Cross multiply
    19,378.62x = 26,712.17 × 12,660.89
  4. Step 4: Simplify right side
    19,378.62x = 338,199,649.17
  5. Step 5: Solve for x
    x = 338,199,649.17/19,378.62
  6. Step 6: Final answer
    x = 17,452.21

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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.