Home / 14,217.78-21,301.08-8,371.20

Finding the Fourth Proportional to 14,217.78, 21,301.08 and 8,371.20

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Solution

The fourth proportional to 14,217.78, 21,301.08 and 8,371.20 is: 12,541.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,217.78 : 21,301.08 = 8,371.20 : x
  2. Step 2: Convert to fraction form
    14,217.78/21,301.08 = 8,371.20/x
  3. Step 3: Cross multiply
    14,217.78x = 21,301.08 × 8,371.20
  4. Step 4: Simplify right side
    14,217.78x = 178,315,600.90
  5. Step 5: Solve for x
    x = 178,315,600.90/14,217.78
  6. Step 6: Final answer
    x = 12,541.73

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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.