Home / 21,328.21-31,991.17-6,537.18

Finding the Fourth Proportional to 21,328.21, 31,991.17 and 6,537.18

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Solution

The fourth proportional to 21,328.21, 31,991.17 and 6,537.18 is: 9,805.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.21 : 31,991.17 = 6,537.18 : x
  2. Step 2: Convert to fraction form
    21,328.21/31,991.17 = 6,537.18/x
  3. Step 3: Cross multiply
    21,328.21x = 31,991.17 × 6,537.18
  4. Step 4: Simplify right side
    21,328.21x = 209,132,036.70
  5. Step 5: Solve for x
    x = 209,132,036.70/21,328.21
  6. Step 6: Final answer
    x = 9,805.42

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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.