Home / 21,167.22-31,752.41-7,127.19

Finding the Fourth Proportional to 21,167.22, 31,752.41 and 7,127.19

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Solution

The fourth proportional to 21,167.22, 31,752.41 and 7,127.19 is: 10,691.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.22 : 31,752.41 = 7,127.19 : x
  2. Step 2: Convert to fraction form
    21,167.22/31,752.41 = 7,127.19/x
  3. Step 3: Cross multiply
    21,167.22x = 31,752.41 × 7,127.19
  4. Step 4: Simplify right side
    21,167.22x = 226,305,423.39
  5. Step 5: Solve for x
    x = 226,305,423.39/21,167.22
  6. Step 6: Final answer
    x = 10,691.31

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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.