Home / 19,880.28-27,424.35-12,324.15

Finding the Fourth Proportional to 19,880.28, 27,424.35 and 12,324.15

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Solution

The fourth proportional to 19,880.28, 27,424.35 and 12,324.15 is: 17,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.28 : 27,424.35 = 12,324.15 : x
  2. Step 2: Convert to fraction form
    19,880.28/27,424.35 = 12,324.15/x
  3. Step 3: Cross multiply
    19,880.28x = 27,424.35 × 12,324.15
  4. Step 4: Simplify right side
    19,880.28x = 337,981,803.05
  5. Step 5: Solve for x
    x = 337,981,803.05/19,880.28
  6. Step 6: Final answer
    x = 17,000.86

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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.