Home / 25,452.90-35,128.62-15,382.80

Finding the Fourth Proportional to 25,452.90, 35,128.62 and 15,382.80

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Solution

The fourth proportional to 25,452.90, 35,128.62 and 15,382.80 is: 21,230.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,452.90 : 35,128.62 = 15,382.80 : x
  2. Step 2: Convert to fraction form
    25,452.90/35,128.62 = 15,382.80/x
  3. Step 3: Cross multiply
    25,452.90x = 35,128.62 × 15,382.80
  4. Step 4: Simplify right side
    25,452.90x = 540,376,535.74
  5. Step 5: Solve for x
    x = 540,376,535.74/25,452.90
  6. Step 6: Final answer
    x = 21,230.45

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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.