Home / 20,566.75-28,382.13-11,135.32

Finding the Fourth Proportional to 20,566.75, 28,382.13 and 11,135.32

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Solution

The fourth proportional to 20,566.75, 28,382.13 and 11,135.32 is: 15,366.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.75 : 28,382.13 = 11,135.32 : x
  2. Step 2: Convert to fraction form
    20,566.75/28,382.13 = 11,135.32/x
  3. Step 3: Cross multiply
    20,566.75x = 28,382.13 × 11,135.32
  4. Step 4: Simplify right side
    20,566.75x = 316,044,099.83
  5. Step 5: Solve for x
    x = 316,044,099.83/20,566.75
  6. Step 6: Final answer
    x = 15,366.75

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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.