Home / 12,728.95-19,088.56-6,882.37

Finding the Fourth Proportional to 12,728.95, 19,088.56 and 6,882.37

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Solution

The fourth proportional to 12,728.95, 19,088.56 and 6,882.37 is: 10,320.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.95 : 19,088.56 = 6,882.37 : x
  2. Step 2: Convert to fraction form
    12,728.95/19,088.56 = 6,882.37/x
  3. Step 3: Cross multiply
    12,728.95x = 19,088.56 × 6,882.37
  4. Step 4: Simplify right side
    12,728.95x = 131,374,493.57
  5. Step 5: Solve for x
    x = 131,374,493.57/12,728.95
  6. Step 6: Final answer
    x = 10,320.92

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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.