Home / 25,631.90-35,372.04-15,021.54

Finding the Fourth Proportional to 25,631.90, 35,372.04 and 15,021.54

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Solution

The fourth proportional to 25,631.90, 35,372.04 and 15,021.54 is: 20,729.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,631.90 : 35,372.04 = 15,021.54 : x
  2. Step 2: Convert to fraction form
    25,631.90/35,372.04 = 15,021.54/x
  3. Step 3: Cross multiply
    25,631.90x = 35,372.04 × 15,021.54
  4. Step 4: Simplify right side
    25,631.90x = 531,342,513.74
  5. Step 5: Solve for x
    x = 531,342,513.74/25,631.90
  6. Step 6: Final answer
    x = 20,729.74

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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.