Home / 20,746.85-31,151.30-11,872.17

Finding the Fourth Proportional to 20,746.85, 31,151.30 and 11,872.17

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Solution

The fourth proportional to 20,746.85, 31,151.30 and 11,872.17 is: 17,826.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.85 : 31,151.30 = 11,872.17 : x
  2. Step 2: Convert to fraction form
    20,746.85/31,151.30 = 11,872.17/x
  3. Step 3: Cross multiply
    20,746.85x = 31,151.30 × 11,872.17
  4. Step 4: Simplify right side
    20,746.85x = 369,833,469.96
  5. Step 5: Solve for x
    x = 369,833,469.96/20,746.85
  6. Step 6: Final answer
    x = 17,826.01

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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.