Home / 12,934.24-19,401.60-5,142.40

Finding the Fourth Proportional to 12,934.24, 19,401.60 and 5,142.40

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Solution

The fourth proportional to 12,934.24, 19,401.60 and 5,142.40 is: 7,713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,934.24 : 19,401.60 = 5,142.40 : x
  2. Step 2: Convert to fraction form
    12,934.24/19,401.60 = 5,142.40/x
  3. Step 3: Cross multiply
    12,934.24x = 19,401.60 × 5,142.40
  4. Step 4: Simplify right side
    12,934.24x = 99,770,787.84
  5. Step 5: Solve for x
    x = 99,770,787.84/12,934.24
  6. Step 6: Final answer
    x = 7,713.70

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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.