Home / 21,827.20-32,740.80-5,411.20

Finding the Fourth Proportional to 21,827.20, 32,740.80 and 5,411.20

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Solution

The fourth proportional to 21,827.20, 32,740.80 and 5,411.20 is: 8,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.20 : 32,740.80 = 5,411.20 : x
  2. Step 2: Convert to fraction form
    21,827.20/32,740.80 = 5,411.20/x
  3. Step 3: Cross multiply
    21,827.20x = 32,740.80 × 5,411.20
  4. Step 4: Simplify right side
    21,827.20x = 177,167,016.96
  5. Step 5: Solve for x
    x = 177,167,016.96/21,827.20
  6. Step 6: Final answer
    x = 8,116.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.