Home / 15,456.78-21,338.63-12,092.45

Finding the Fourth Proportional to 15,456.78, 21,338.63 and 12,092.45

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Solution

The fourth proportional to 15,456.78, 21,338.63 and 12,092.45 is: 16,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.78 : 21,338.63 = 12,092.45 : x
  2. Step 2: Convert to fraction form
    15,456.78/21,338.63 = 12,092.45/x
  3. Step 3: Cross multiply
    15,456.78x = 21,338.63 × 12,092.45
  4. Step 4: Simplify right side
    15,456.78x = 258,036,149.19
  5. Step 5: Solve for x
    x = 258,036,149.19/15,456.78
  6. Step 6: Final answer
    x = 16,694.04

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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.