Home / 12,479.23-18,718.81-5,081.95

Finding the Fourth Proportional to 12,479.23, 18,718.81 and 5,081.95

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Solution

The fourth proportional to 12,479.23, 18,718.81 and 5,081.95 is: 7,622.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.23 : 18,718.81 = 5,081.95 : x
  2. Step 2: Convert to fraction form
    12,479.23/18,718.81 = 5,081.95/x
  3. Step 3: Cross multiply
    12,479.23x = 18,718.81 × 5,081.95
  4. Step 4: Simplify right side
    12,479.23x = 95,127,996.98
  5. Step 5: Solve for x
    x = 95,127,996.98/12,479.23
  6. Step 6: Final answer
    x = 7,622.91

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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.