Home / 15,948.49-21,986.10-11,218.09

Finding the Fourth Proportional to 15,948.49, 21,986.10 and 11,218.09

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Solution

The fourth proportional to 15,948.49, 21,986.10 and 11,218.09 is: 15,464.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,948.49 : 21,986.10 = 11,218.09 : x
  2. Step 2: Convert to fraction form
    15,948.49/21,986.10 = 11,218.09/x
  3. Step 3: Cross multiply
    15,948.49x = 21,986.10 × 11,218.09
  4. Step 4: Simplify right side
    15,948.49x = 246,641,882.53
  5. Step 5: Solve for x
    x = 246,641,882.53/15,948.49
  6. Step 6: Final answer
    x = 15,464.91

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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.