Home / 20,827.44-28,740.96-11,875.20

Finding the Fourth Proportional to 20,827.44, 28,740.96 and 11,875.20

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Solution

The fourth proportional to 20,827.44, 28,740.96 and 11,875.20 is: 16,387.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.44 : 28,740.96 = 11,875.20 : x
  2. Step 2: Convert to fraction form
    20,827.44/28,740.96 = 11,875.20/x
  3. Step 3: Cross multiply
    20,827.44x = 28,740.96 × 11,875.20
  4. Step 4: Simplify right side
    20,827.44x = 341,304,648.19
  5. Step 5: Solve for x
    x = 341,304,648.19/20,827.44
  6. Step 6: Final answer
    x = 16,387.26

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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.