Home / 11,187.60-15,440.16-6,712.80

Finding the Fourth Proportional to 11,187.60, 15,440.16 and 6,712.80

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Solution

The fourth proportional to 11,187.60, 15,440.16 and 6,712.80 is: 9,264.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.60 : 15,440.16 = 6,712.80 : x
  2. Step 2: Convert to fraction form
    11,187.60/15,440.16 = 6,712.80/x
  3. Step 3: Cross multiply
    11,187.60x = 15,440.16 × 6,712.80
  4. Step 4: Simplify right side
    11,187.60x = 103,646,706.05
  5. Step 5: Solve for x
    x = 103,646,706.05/11,187.60
  6. Step 6: Final answer
    x = 9,264.43

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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.