Home / 21,338.40-31,989.13-11,466.12

Finding the Fourth Proportional to 21,338.40, 31,989.13 and 11,466.12

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Solution

The fourth proportional to 21,338.40, 31,989.13 and 11,466.12 is: 17,189.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.40 : 31,989.13 = 11,466.12 : x
  2. Step 2: Convert to fraction form
    21,338.40/31,989.13 = 11,466.12/x
  3. Step 3: Cross multiply
    21,338.40x = 31,989.13 × 11,466.12
  4. Step 4: Simplify right side
    21,338.40x = 366,791,294.57
  5. Step 5: Solve for x
    x = 366,791,294.57/21,338.40
  6. Step 6: Final answer
    x = 17,189.26

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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.