Home / 11,152.28-15,389.49-6,115.50

Finding the Fourth Proportional to 11,152.28, 15,389.49 and 6,115.50

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Solution

The fourth proportional to 11,152.28, 15,389.49 and 6,115.50 is: 8,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.28 : 15,389.49 = 6,115.50 : x
  2. Step 2: Convert to fraction form
    11,152.28/15,389.49 = 6,115.50/x
  3. Step 3: Cross multiply
    11,152.28x = 15,389.49 × 6,115.50
  4. Step 4: Simplify right side
    11,152.28x = 94,114,449.03
  5. Step 5: Solve for x
    x = 94,114,449.03/11,152.28
  6. Step 6: Final answer
    x = 8,439.03

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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.