Home / 15,556.30-21,456.84-15,042.04

Finding the Fourth Proportional to 15,556.30, 21,456.84 and 15,042.04

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Solution

The fourth proportional to 15,556.30, 21,456.84 and 15,042.04 is: 20,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,556.30 : 21,456.84 = 15,042.04 : x
  2. Step 2: Convert to fraction form
    15,556.30/21,456.84 = 15,042.04/x
  3. Step 3: Cross multiply
    15,556.30x = 21,456.84 × 15,042.04
  4. Step 4: Simplify right side
    15,556.30x = 322,754,645.55
  5. Step 5: Solve for x
    x = 322,754,645.55/15,556.30
  6. Step 6: Final answer
    x = 20,747.52

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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.