Home / 19,154.70-26,438.13-12,781.62

Finding the Fourth Proportional to 19,154.70, 26,438.13 and 12,781.62

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Solution

The fourth proportional to 19,154.70, 26,438.13 and 12,781.62 is: 17,641.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,154.70 : 26,438.13 = 12,781.62 : x
  2. Step 2: Convert to fraction form
    19,154.70/26,438.13 = 12,781.62/x
  3. Step 3: Cross multiply
    19,154.70x = 26,438.13 × 12,781.62
  4. Step 4: Simplify right side
    19,154.70x = 337,922,131.17
  5. Step 5: Solve for x
    x = 337,922,131.17/19,154.70
  6. Step 6: Final answer
    x = 17,641.73

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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.