Home / 12,720.34-17,550.48-8,244.28

Finding the Fourth Proportional to 12,720.34, 17,550.48 and 8,244.28

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Solution

The fourth proportional to 12,720.34, 17,550.48 and 8,244.28 is: 11,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.34 : 17,550.48 = 8,244.28 : x
  2. Step 2: Convert to fraction form
    12,720.34/17,550.48 = 8,244.28/x
  3. Step 3: Cross multiply
    12,720.34x = 17,550.48 × 8,244.28
  4. Step 4: Simplify right side
    12,720.34x = 144,691,071.25
  5. Step 5: Solve for x
    x = 144,691,071.25/12,720.34
  6. Step 6: Final answer
    x = 11,374.78

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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.