Home / 12,718.65-19,079.19-3,951.21

Finding the Fourth Proportional to 12,718.65, 19,079.19 and 3,951.21

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Solution

The fourth proportional to 12,718.65, 19,079.19 and 3,951.21 is: 5,927.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.65 : 19,079.19 = 3,951.21 : x
  2. Step 2: Convert to fraction form
    12,718.65/19,079.19 = 3,951.21/x
  3. Step 3: Cross multiply
    12,718.65x = 19,079.19 × 3,951.21
  4. Step 4: Simplify right side
    12,718.65x = 75,385,886.32
  5. Step 5: Solve for x
    x = 75,385,886.32/12,718.65
  6. Step 6: Final answer
    x = 5,927.19

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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.