Home / 27,815.20-41,722.80-10,281.40

Finding the Fourth Proportional to 27,815.20, 41,722.80 and 10,281.40

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Solution

The fourth proportional to 27,815.20, 41,722.80 and 10,281.40 is: 15,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.20 : 41,722.80 = 10,281.40 : x
  2. Step 2: Convert to fraction form
    27,815.20/41,722.80 = 10,281.40/x
  3. Step 3: Cross multiply
    27,815.20x = 41,722.80 × 10,281.40
  4. Step 4: Simplify right side
    27,815.20x = 428,968,795.92
  5. Step 5: Solve for x
    x = 428,968,795.92/27,815.20
  6. Step 6: Final answer
    x = 15,422.10

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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.