Home / 12,718.06-19,078.89-5,320.84

Finding the Fourth Proportional to 12,718.06, 19,078.89 and 5,320.84

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Solution

The fourth proportional to 12,718.06, 19,078.89 and 5,320.84 is: 7,982.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.06 : 19,078.89 = 5,320.84 : x
  2. Step 2: Convert to fraction form
    12,718.06/19,078.89 = 5,320.84/x
  3. Step 3: Cross multiply
    12,718.06x = 19,078.89 × 5,320.84
  4. Step 4: Simplify right side
    12,718.06x = 101,515,719.12
  5. Step 5: Solve for x
    x = 101,515,719.12/12,718.06
  6. Step 6: Final answer
    x = 7,982.01

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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.