Home / 21,067.08-31,616.94-7,931.40

Finding the Fourth Proportional to 21,067.08, 31,616.94 and 7,931.40

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Solution

The fourth proportional to 21,067.08, 31,616.94 and 7,931.40 is: 11,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.08 : 31,616.94 = 7,931.40 : x
  2. Step 2: Convert to fraction form
    21,067.08/31,616.94 = 7,931.40/x
  3. Step 3: Cross multiply
    21,067.08x = 31,616.94 × 7,931.40
  4. Step 4: Simplify right side
    21,067.08x = 250,766,597.92
  5. Step 5: Solve for x
    x = 250,766,597.92/21,067.08
  6. Step 6: Final answer
    x = 11,903.24

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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.