Home / 11,223.11-15,486.63-6,441.78

Finding the Fourth Proportional to 11,223.11, 15,486.63 and 6,441.78

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Solution

The fourth proportional to 11,223.11, 15,486.63 and 6,441.78 is: 8,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,223.11 : 15,486.63 = 6,441.78 : x
  2. Step 2: Convert to fraction form
    11,223.11/15,486.63 = 6,441.78/x
  3. Step 3: Cross multiply
    11,223.11x = 15,486.63 × 6,441.78
  4. Step 4: Simplify right side
    11,223.11x = 99,761,463.40
  5. Step 5: Solve for x
    x = 99,761,463.40/11,223.11
  6. Step 6: Final answer
    x = 8,888.94

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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.