Home / 10,479.80-15,719.70-2,688.61

Finding the Fourth Proportional to 10,479.80, 15,719.70 and 2,688.61

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Solution

The fourth proportional to 10,479.80, 15,719.70 and 2,688.61 is: 4,032.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.80 : 15,719.70 = 2,688.61 : x
  2. Step 2: Convert to fraction form
    10,479.80/15,719.70 = 2,688.61/x
  3. Step 3: Cross multiply
    10,479.80x = 15,719.70 × 2,688.61
  4. Step 4: Simplify right side
    10,479.80x = 42,264,050.58
  5. Step 5: Solve for x
    x = 42,264,050.58/10,479.80
  6. Step 6: Final answer
    x = 4,032.91

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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.