Home / 12,449.40-17,180.64-6,784.68

Finding the Fourth Proportional to 12,449.40, 17,180.64 and 6,784.68

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Solution

The fourth proportional to 12,449.40, 17,180.64 and 6,784.68 is: 9,363.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449.40 : 17,180.64 = 6,784.68 : x
  2. Step 2: Convert to fraction form
    12,449.40/17,180.64 = 6,784.68/x
  3. Step 3: Cross multiply
    12,449.40x = 17,180.64 × 6,784.68
  4. Step 4: Simplify right side
    12,449.40x = 116,565,144.60
  5. Step 5: Solve for x
    x = 116,565,144.60/12,449.40
  6. Step 6: Final answer
    x = 9,363.11

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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.