Home / 11,106.71-15,327.72-6,391.01

Finding the Fourth Proportional to 11,106.71, 15,327.72 and 6,391.01

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Solution

The fourth proportional to 11,106.71, 15,327.72 and 6,391.01 is: 8,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,106.71 : 15,327.72 = 6,391.01 : x
  2. Step 2: Convert to fraction form
    11,106.71/15,327.72 = 6,391.01/x
  3. Step 3: Cross multiply
    11,106.71x = 15,327.72 × 6,391.01
  4. Step 4: Simplify right side
    11,106.71x = 97,959,611.80
  5. Step 5: Solve for x
    x = 97,959,611.80/11,106.71
  6. Step 6: Final answer
    x = 8,819.86

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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.