Home / 27,878.84-41,816.76-20,390.12

Finding the Fourth Proportional to 27,878.84, 41,816.76 and 20,390.12

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Solution

The fourth proportional to 27,878.84, 41,816.76 and 20,390.12 is: 30,584.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.84 : 41,816.76 = 20,390.12 : x
  2. Step 2: Convert to fraction form
    27,878.84/41,816.76 = 20,390.12/x
  3. Step 3: Cross multiply
    27,878.84x = 41,816.76 × 20,390.12
  4. Step 4: Simplify right side
    27,878.84x = 852,648,754.41
  5. Step 5: Solve for x
    x = 852,648,754.41/27,878.84
  6. Step 6: Final answer
    x = 30,584.08

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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.