Home / 20,335.50-28,061.37-11,382.57

Finding the Fourth Proportional to 20,335.50, 28,061.37 and 11,382.57

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Solution

The fourth proportional to 20,335.50, 28,061.37 and 11,382.57 is: 15,707.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.50 : 28,061.37 = 11,382.57 : x
  2. Step 2: Convert to fraction form
    20,335.50/28,061.37 = 11,382.57/x
  3. Step 3: Cross multiply
    20,335.50x = 28,061.37 × 11,382.57
  4. Step 4: Simplify right side
    20,335.50x = 319,410,508.32
  5. Step 5: Solve for x
    x = 319,410,508.32/20,335.50
  6. Step 6: Final answer
    x = 15,707.04

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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.