Home / 31,432.50-43,367.13-20,827.98

Finding the Fourth Proportional to 31,432.50, 43,367.13 and 20,827.98

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Solution

The fourth proportional to 31,432.50, 43,367.13 and 20,827.98 is: 28,736.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,432.50 : 43,367.13 = 20,827.98 : x
  2. Step 2: Convert to fraction form
    31,432.50/43,367.13 = 20,827.98/x
  3. Step 3: Cross multiply
    31,432.50x = 43,367.13 × 20,827.98
  4. Step 4: Simplify right side
    31,432.50x = 903,249,716.30
  5. Step 5: Solve for x
    x = 903,249,716.30/31,432.50
  6. Step 6: Final answer
    x = 28,736.17

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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.