Home / 15,851.45-21,874.96-9,137.03

Finding the Fourth Proportional to 15,851.45, 21,874.96 and 9,137.03

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Solution

The fourth proportional to 15,851.45, 21,874.96 and 9,137.03 is: 12,609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.45 : 21,874.96 = 9,137.03 : x
  2. Step 2: Convert to fraction form
    15,851.45/21,874.96 = 9,137.03/x
  3. Step 3: Cross multiply
    15,851.45x = 21,874.96 × 9,137.03
  4. Step 4: Simplify right side
    15,851.45x = 199,872,188.61
  5. Step 5: Solve for x
    x = 199,872,188.61/15,851.45
  6. Step 6: Final answer
    x = 12,609.08

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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.