Home / 11,151.29-15,388.99-6,115.20

Finding the Fourth Proportional to 11,151.29, 15,388.99 and 6,115.20

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Solution

The fourth proportional to 11,151.29, 15,388.99 and 6,115.20 is: 8,439.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.29 : 15,388.99 = 6,115.20 : x
  2. Step 2: Convert to fraction form
    11,151.29/15,388.99 = 6,115.20/x
  3. Step 3: Cross multiply
    11,151.29x = 15,388.99 × 6,115.20
  4. Step 4: Simplify right side
    11,151.29x = 94,106,808.50
  5. Step 5: Solve for x
    x = 94,106,808.50/11,151.29
  6. Step 6: Final answer
    x = 8,439.10

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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.