Home / 15,525.78-21,425.56-8,452.20

Finding the Fourth Proportional to 15,525.78, 21,425.56 and 8,452.20

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Solution

The fourth proportional to 15,525.78, 21,425.56 and 8,452.20 is: 11,664.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.78 : 21,425.56 = 8,452.20 : x
  2. Step 2: Convert to fraction form
    15,525.78/21,425.56 = 8,452.20/x
  3. Step 3: Cross multiply
    15,525.78x = 21,425.56 × 8,452.20
  4. Step 4: Simplify right side
    15,525.78x = 181,093,118.23
  5. Step 5: Solve for x
    x = 181,093,118.23/15,525.78
  6. Step 6: Final answer
    x = 11,664.03

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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.