Home / 31,634.47-47,415.84-12,890.89

Finding the Fourth Proportional to 31,634.47, 47,415.84 and 12,890.89

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Solution

The fourth proportional to 31,634.47, 47,415.84 and 12,890.89 is: 19,321.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,634.47 : 47,415.84 = 12,890.89 : x
  2. Step 2: Convert to fraction form
    31,634.47/47,415.84 = 12,890.89/x
  3. Step 3: Cross multiply
    31,634.47x = 47,415.84 × 12,890.89
  4. Step 4: Simplify right side
    31,634.47x = 611,232,377.70
  5. Step 5: Solve for x
    x = 611,232,377.70/31,634.47
  6. Step 6: Final answer
    x = 19,321.72

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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.