Home / 11,247.78-15,515.80-6,768.84

Finding the Fourth Proportional to 11,247.78, 15,515.80 and 6,768.84

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Solution

The fourth proportional to 11,247.78, 15,515.80 and 6,768.84 is: 9,337.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,247.78 : 15,515.80 = 6,768.84 : x
  2. Step 2: Convert to fraction form
    11,247.78/15,515.80 = 6,768.84/x
  3. Step 3: Cross multiply
    11,247.78x = 15,515.80 × 6,768.84
  4. Step 4: Simplify right side
    11,247.78x = 105,023,967.67
  5. Step 5: Solve for x
    x = 105,023,967.67/11,247.78
  6. Step 6: Final answer
    x = 9,337.31

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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.