Home / 21,127.36-31,689.16-6,339.56

Finding the Fourth Proportional to 21,127.36, 31,689.16 and 6,339.56

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Solution

The fourth proportional to 21,127.36, 31,689.16 and 6,339.56 is: 9,508.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.36 : 31,689.16 = 6,339.56 : x
  2. Step 2: Convert to fraction form
    21,127.36/31,689.16 = 6,339.56/x
  3. Step 3: Cross multiply
    21,127.36x = 31,689.16 × 6,339.56
  4. Step 4: Simplify right side
    21,127.36x = 200,895,331.17
  5. Step 5: Solve for x
    x = 200,895,331.17/21,127.36
  6. Step 6: Final answer
    x = 9,508.78

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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.