Home / 19,016.82-28,509.78-7,931.76

Finding the Fourth Proportional to 19,016.82, 28,509.78 and 7,931.76

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Solution

The fourth proportional to 19,016.82, 28,509.78 and 7,931.76 is: 11,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,016.82 : 28,509.78 = 7,931.76 : x
  2. Step 2: Convert to fraction form
    19,016.82/28,509.78 = 7,931.76/x
  3. Step 3: Cross multiply
    19,016.82x = 28,509.78 × 7,931.76
  4. Step 4: Simplify right side
    19,016.82x = 226,132,732.61
  5. Step 5: Solve for x
    x = 226,132,732.61/19,016.82
  6. Step 6: Final answer
    x = 11,891.20

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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.