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Finding the Fourth Proportional to 12,449.84, 17,180.88 and 6,860.84

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Solution

The fourth proportional to 12,449.84, 17,180.88 and 6,860.84 is: 9,468.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449.84 : 17,180.88 = 6,860.84 : x
  2. Step 2: Convert to fraction form
    12,449.84/17,180.88 = 6,860.84/x
  3. Step 3: Cross multiply
    12,449.84x = 17,180.88 × 6,860.84
  4. Step 4: Simplify right side
    12,449.84x = 117,875,268.74
  5. Step 5: Solve for x
    x = 117,875,268.74/12,449.84
  6. Step 6: Final answer
    x = 9,468.01

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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.