Home / 12,479.04-18,708.62-7,208.06

Finding the Fourth Proportional to 12,479.04, 18,708.62 and 7,208.06

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Solution

The fourth proportional to 12,479.04, 18,708.62 and 7,208.06 is: 10,806.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.04 : 18,708.62 = 7,208.06 : x
  2. Step 2: Convert to fraction form
    12,479.04/18,708.62 = 7,208.06/x
  3. Step 3: Cross multiply
    12,479.04x = 18,708.62 × 7,208.06
  4. Step 4: Simplify right side
    12,479.04x = 134,852,725.89
  5. Step 5: Solve for x
    x = 134,852,725.89/12,479.04
  6. Step 6: Final answer
    x = 10,806.34

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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.