Home / 15,525.90-21,426.23-8,452.78

Finding the Fourth Proportional to 15,525.90, 21,426.23 and 8,452.78

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Solution

The fourth proportional to 15,525.90, 21,426.23 and 8,452.78 is: 11,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.90 : 21,426.23 = 8,452.78 : x
  2. Step 2: Convert to fraction form
    15,525.90/21,426.23 = 8,452.78/x
  3. Step 3: Cross multiply
    15,525.90x = 21,426.23 × 8,452.78
  4. Step 4: Simplify right side
    15,525.90x = 181,111,208.42
  5. Step 5: Solve for x
    x = 181,111,208.42/15,525.90
  6. Step 6: Final answer
    x = 11,665.10

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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.