Home / 19,143.28-26,420.10-10,759.78

Finding the Fourth Proportional to 19,143.28, 26,420.10 and 10,759.78

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Solution

The fourth proportional to 19,143.28, 26,420.10 and 10,759.78 is: 14,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.28 : 26,420.10 = 10,759.78 : x
  2. Step 2: Convert to fraction form
    19,143.28/26,420.10 = 10,759.78/x
  3. Step 3: Cross multiply
    19,143.28x = 26,420.10 × 10,759.78
  4. Step 4: Simplify right side
    19,143.28x = 284,274,463.58
  5. Step 5: Solve for x
    x = 284,274,463.58/19,143.28
  6. Step 6: Final answer
    x = 14,849.83

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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.