Home / 28,432.32-39,221.73-21,706.29

Finding the Fourth Proportional to 28,432.32, 39,221.73 and 21,706.29

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Solution

The fourth proportional to 28,432.32, 39,221.73 and 21,706.29 is: 29,943.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.32 : 39,221.73 = 21,706.29 : x
  2. Step 2: Convert to fraction form
    28,432.32/39,221.73 = 21,706.29/x
  3. Step 3: Cross multiply
    28,432.32x = 39,221.73 × 21,706.29
  4. Step 4: Simplify right side
    28,432.32x = 851,358,245.68
  5. Step 5: Solve for x
    x = 851,358,245.68/28,432.32
  6. Step 6: Final answer
    x = 29,943.33

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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.