Home / 12,291.20-16,961.24-7,258.40

Finding the Fourth Proportional to 12,291.20, 16,961.24 and 7,258.40

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Solution

The fourth proportional to 12,291.20, 16,961.24 and 7,258.40 is: 10,016.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.20 : 16,961.24 = 7,258.40 : x
  2. Step 2: Convert to fraction form
    12,291.20/16,961.24 = 7,258.40/x
  3. Step 3: Cross multiply
    12,291.20x = 16,961.24 × 7,258.40
  4. Step 4: Simplify right side
    12,291.20x = 123,111,464.42
  5. Step 5: Solve for x
    x = 123,111,464.42/12,291.20
  6. Step 6: Final answer
    x = 10,016.23

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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.