Home / 25,691.78-35,465.55-15,623.42

Finding the Fourth Proportional to 25,691.78, 35,465.55 and 15,623.42

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Solution

The fourth proportional to 25,691.78, 35,465.55 and 15,623.42 is: 21,566.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.78 : 35,465.55 = 15,623.42 : x
  2. Step 2: Convert to fraction form
    25,691.78/35,465.55 = 15,623.42/x
  3. Step 3: Cross multiply
    25,691.78x = 35,465.55 × 15,623.42
  4. Step 4: Simplify right side
    25,691.78x = 554,093,005.85
  5. Step 5: Solve for x
    x = 554,093,005.85/25,691.78
  6. Step 6: Final answer
    x = 21,566.94

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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.