Home / 11,110.60-15,334.50-6,637.78

Finding the Fourth Proportional to 11,110.60, 15,334.50 and 6,637.78

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Solution

The fourth proportional to 11,110.60, 15,334.50 and 6,637.78 is: 9,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,110.60 : 15,334.50 = 6,637.78 : x
  2. Step 2: Convert to fraction form
    11,110.60/15,334.50 = 6,637.78/x
  3. Step 3: Cross multiply
    11,110.60x = 15,334.50 × 6,637.78
  4. Step 4: Simplify right side
    11,110.60x = 101,787,037.41
  5. Step 5: Solve for x
    x = 101,787,037.41/11,110.60
  6. Step 6: Final answer
    x = 9,161.25

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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.