Home / 12,718.62-19,080.36-3,953.61

Finding the Fourth Proportional to 12,718.62, 19,080.36 and 3,953.61

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Solution

The fourth proportional to 12,718.62, 19,080.36 and 3,953.61 is: 5,931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.62 : 19,080.36 = 3,953.61 : x
  2. Step 2: Convert to fraction form
    12,718.62/19,080.36 = 3,953.61/x
  3. Step 3: Cross multiply
    12,718.62x = 19,080.36 × 3,953.61
  4. Step 4: Simplify right side
    12,718.62x = 75,436,302.10
  5. Step 5: Solve for x
    x = 75,436,302.10/12,718.62
  6. Step 6: Final answer
    x = 5,931.17

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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.