Home / 20,635.80-28,476.60-11,204.16

Finding the Fourth Proportional to 20,635.80, 28,476.60 and 11,204.16

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Solution

The fourth proportional to 20,635.80, 28,476.60 and 11,204.16 is: 15,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.80 : 28,476.60 = 11,204.16 : x
  2. Step 2: Convert to fraction form
    20,635.80/28,476.60 = 11,204.16/x
  3. Step 3: Cross multiply
    20,635.80x = 28,476.60 × 11,204.16
  4. Step 4: Simplify right side
    20,635.80x = 319,056,382.66
  5. Step 5: Solve for x
    x = 319,056,382.66/20,635.80
  6. Step 6: Final answer
    x = 15,461.30

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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.