Home / 10,851.80-16,264.90-8,112.60

Finding the Fourth Proportional to 10,851.80, 16,264.90 and 8,112.60

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Solution

The fourth proportional to 10,851.80, 16,264.90 and 8,112.60 is: 12,159.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,851.80 : 16,264.90 = 8,112.60 : x
  2. Step 2: Convert to fraction form
    10,851.80/16,264.90 = 8,112.60/x
  3. Step 3: Cross multiply
    10,851.80x = 16,264.90 × 8,112.60
  4. Step 4: Simplify right side
    10,851.80x = 131,950,627.74
  5. Step 5: Solve for x
    x = 131,950,627.74/10,851.80
  6. Step 6: Final answer
    x = 12,159.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.