Home / 20,449.27-28,218.40-11,495.04

Finding the Fourth Proportional to 20,449.27, 28,218.40 and 11,495.04

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Solution

The fourth proportional to 20,449.27, 28,218.40 and 11,495.04 is: 15,862.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.27 : 28,218.40 = 11,495.04 : x
  2. Step 2: Convert to fraction form
    20,449.27/28,218.40 = 11,495.04/x
  3. Step 3: Cross multiply
    20,449.27x = 28,218.40 × 11,495.04
  4. Step 4: Simplify right side
    20,449.27x = 324,371,636.74
  5. Step 5: Solve for x
    x = 324,371,636.74/20,449.27
  6. Step 6: Final answer
    x = 15,862.26

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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.