Home / 12,268.74-18,399.30-6,422.16

Finding the Fourth Proportional to 12,268.74, 18,399.30 and 6,422.16

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Solution

The fourth proportional to 12,268.74, 18,399.30 and 6,422.16 is: 9,631.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268.74 : 18,399.30 = 6,422.16 : x
  2. Step 2: Convert to fraction form
    12,268.74/18,399.30 = 6,422.16/x
  3. Step 3: Cross multiply
    12,268.74x = 18,399.30 × 6,422.16
  4. Step 4: Simplify right side
    12,268.74x = 118,163,248.49
  5. Step 5: Solve for x
    x = 118,163,248.49/12,268.74
  6. Step 6: Final answer
    x = 9,631.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.