Home / 14,961.36-20,645.75-8,247.05

Finding the Fourth Proportional to 14,961.36, 20,645.75 and 8,247.05

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Solution

The fourth proportional to 14,961.36, 20,645.75 and 8,247.05 is: 11,380.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,961.36 : 20,645.75 = 8,247.05 : x
  2. Step 2: Convert to fraction form
    14,961.36/20,645.75 = 8,247.05/x
  3. Step 3: Cross multiply
    14,961.36x = 20,645.75 × 8,247.05
  4. Step 4: Simplify right side
    14,961.36x = 170,266,388.07
  5. Step 5: Solve for x
    x = 170,266,388.07/14,961.36
  6. Step 6: Final answer
    x = 11,380.41

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Double scale
Find fourth proportional to 14,962.36, 20,647.12 and 8,248.05
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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.