Home / 22,315.78-30,743.58-15,589.54

Finding the Fourth Proportional to 22,315.78, 30,743.58 and 15,589.54

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Solution

The fourth proportional to 22,315.78, 30,743.58 and 15,589.54 is: 21,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,315.78 : 30,743.58 = 15,589.54 : x
  2. Step 2: Convert to fraction form
    22,315.78/30,743.58 = 15,589.54/x
  3. Step 3: Cross multiply
    22,315.78x = 30,743.58 × 15,589.54
  4. Step 4: Simplify right side
    22,315.78x = 479,278,270.15
  5. Step 5: Solve for x
    x = 479,278,270.15/22,315.78
  6. Step 6: Final answer
    x = 21,477.10

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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.