Home / 12,805.17-19,207.79-4,040.78

Finding the Fourth Proportional to 12,805.17, 19,207.79 and 4,040.78

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Solution

The fourth proportional to 12,805.17, 19,207.79 and 4,040.78 is: 6,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.17 : 19,207.79 = 4,040.78 : x
  2. Step 2: Convert to fraction form
    12,805.17/19,207.79 = 4,040.78/x
  3. Step 3: Cross multiply
    12,805.17x = 19,207.79 × 4,040.78
  4. Step 4: Simplify right side
    12,805.17x = 77,614,337.43
  5. Step 5: Solve for x
    x = 77,614,337.43/12,805.17
  6. Step 6: Final answer
    x = 6,061.17

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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.