Home / 11,151.02-15,388.80-6,115.25

Finding the Fourth Proportional to 11,151.02, 15,388.80 and 6,115.25

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Solution

The fourth proportional to 11,151.02, 15,388.80 and 6,115.25 is: 8,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.02 : 15,388.80 = 6,115.25 : x
  2. Step 2: Convert to fraction form
    11,151.02/15,388.80 = 6,115.25/x
  3. Step 3: Cross multiply
    11,151.02x = 15,388.80 × 6,115.25
  4. Step 4: Simplify right side
    11,151.02x = 94,106,359.20
  5. Step 5: Solve for x
    x = 94,106,359.20/11,151.02
  6. Step 6: Final answer
    x = 8,439.26

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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.