Home / 21,508.67-29,681.00-11,949.23

Finding the Fourth Proportional to 21,508.67, 29,681.00 and 11,949.23

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Solution

The fourth proportional to 21,508.67, 29,681.00 and 11,949.23 is: 16,489.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.67 : 29,681.00 = 11,949.23 : x
  2. Step 2: Convert to fraction form
    21,508.67/29,681.00 = 11,949.23/x
  3. Step 3: Cross multiply
    21,508.67x = 29,681.00 × 11,949.23
  4. Step 4: Simplify right side
    21,508.67x = 354,664,977.10
  5. Step 5: Solve for x
    x = 354,664,977.10/21,508.67
  6. Step 6: Final answer
    x = 16,489.39

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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.