Home / 28,007.94-42,019.20-10,479.14

Finding the Fourth Proportional to 28,007.94, 42,019.20 and 10,479.14

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Solution

The fourth proportional to 28,007.94, 42,019.20 and 10,479.14 is: 15,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.94 : 42,019.20 = 10,479.14 : x
  2. Step 2: Convert to fraction form
    28,007.94/42,019.20 = 10,479.14/x
  3. Step 3: Cross multiply
    28,007.94x = 42,019.20 × 10,479.14
  4. Step 4: Simplify right side
    28,007.94x = 440,324,869.39
  5. Step 5: Solve for x
    x = 440,324,869.39/28,007.94
  6. Step 6: Final answer
    x = 15,721.43

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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.