Home / 12,747.68-19,114.95-5,721.67

Finding the Fourth Proportional to 12,747.68, 19,114.95 and 5,721.67

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Solution

The fourth proportional to 12,747.68, 19,114.95 and 5,721.67 is: 8,579.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.68 : 19,114.95 = 5,721.67 : x
  2. Step 2: Convert to fraction form
    12,747.68/19,114.95 = 5,721.67/x
  3. Step 3: Cross multiply
    12,747.68x = 19,114.95 × 5,721.67
  4. Step 4: Simplify right side
    12,747.68x = 109,369,398.75
  5. Step 5: Solve for x
    x = 109,369,398.75/12,747.68
  6. Step 6: Final answer
    x = 8,579.55

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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.