Home / 21,153.20-31,727.40-5,572.04

Finding the Fourth Proportional to 21,153.20, 31,727.40 and 5,572.04

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Solution

The fourth proportional to 21,153.20, 31,727.40 and 5,572.04 is: 8,357.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.20 : 31,727.40 = 5,572.04 : x
  2. Step 2: Convert to fraction form
    21,153.20/31,727.40 = 5,572.04/x
  3. Step 3: Cross multiply
    21,153.20x = 31,727.40 × 5,572.04
  4. Step 4: Simplify right side
    21,153.20x = 176,786,341.90
  5. Step 5: Solve for x
    x = 176,786,341.90/21,153.20
  6. Step 6: Final answer
    x = 8,357.43

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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.