Home / 15,717.92-21,689.14-8,912.26

Finding the Fourth Proportional to 15,717.92, 21,689.14 and 8,912.26

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Solution

The fourth proportional to 15,717.92, 21,689.14 and 8,912.26 is: 12,298.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717.92 : 21,689.14 = 8,912.26 : x
  2. Step 2: Convert to fraction form
    15,717.92/21,689.14 = 8,912.26/x
  3. Step 3: Cross multiply
    15,717.92x = 21,689.14 × 8,912.26
  4. Step 4: Simplify right side
    15,717.92x = 193,299,254.86
  5. Step 5: Solve for x
    x = 193,299,254.86/15,717.92
  6. Step 6: Final answer
    x = 12,298.02

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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.