Home / 11,415.89-17,115.02-7,247.22

Finding the Fourth Proportional to 11,415.89, 17,115.02 and 7,247.22

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Solution

The fourth proportional to 11,415.89, 17,115.02 and 7,247.22 is: 10,865.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.89 : 17,115.02 = 7,247.22 : x
  2. Step 2: Convert to fraction form
    11,415.89/17,115.02 = 7,247.22/x
  3. Step 3: Cross multiply
    11,415.89x = 17,115.02 × 7,247.22
  4. Step 4: Simplify right side
    11,415.89x = 124,036,279.01
  5. Step 5: Solve for x
    x = 124,036,279.01/11,415.89
  6. Step 6: Final answer
    x = 10,865.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.