Home / 12,949.40-17,867.08-9,406.44

Finding the Fourth Proportional to 12,949.40, 17,867.08 and 9,406.44

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Solution

The fourth proportional to 12,949.40, 17,867.08 and 9,406.44 is: 12,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949.40 : 17,867.08 = 9,406.44 : x
  2. Step 2: Convert to fraction form
    12,949.40/17,867.08 = 9,406.44/x
  3. Step 3: Cross multiply
    12,949.40x = 17,867.08 × 9,406.44
  4. Step 4: Simplify right side
    12,949.40x = 168,065,616.00
  5. Step 5: Solve for x
    x = 168,065,616.00/12,949.40
  6. Step 6: Final answer
    x = 12,978.64

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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.