Home / 31,872.12-47,813.88-13,141.76

Finding the Fourth Proportional to 31,872.12, 47,813.88 and 13,141.76

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Solution

The fourth proportional to 31,872.12, 47,813.88 and 13,141.76 is: 19,714.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,872.12 : 47,813.88 = 13,141.76 : x
  2. Step 2: Convert to fraction form
    31,872.12/47,813.88 = 13,141.76/x
  3. Step 3: Cross multiply
    31,872.12x = 47,813.88 × 13,141.76
  4. Step 4: Simplify right side
    31,872.12x = 628,358,535.63
  5. Step 5: Solve for x
    x = 628,358,535.63/31,872.12
  6. Step 6: Final answer
    x = 19,714.99

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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.