Home / 12,921.68-19,381.20-4,154.24

Finding the Fourth Proportional to 12,921.68, 19,381.20 and 4,154.24

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Solution

The fourth proportional to 12,921.68, 19,381.20 and 4,154.24 is: 6,230.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.68 : 19,381.20 = 4,154.24 : x
  2. Step 2: Convert to fraction form
    12,921.68/19,381.20 = 4,154.24/x
  3. Step 3: Cross multiply
    12,921.68x = 19,381.20 × 4,154.24
  4. Step 4: Simplify right side
    12,921.68x = 80,514,156.29
  5. Step 5: Solve for x
    x = 80,514,156.29/12,921.68
  6. Step 6: Final answer
    x = 6,230.94

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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.