Home / 18,962.81-28,443.14-5,815.14

Finding the Fourth Proportional to 18,962.81, 28,443.14 and 5,815.14

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Solution

The fourth proportional to 18,962.81, 28,443.14 and 5,815.14 is: 8,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.81 : 28,443.14 = 5,815.14 : x
  2. Step 2: Convert to fraction form
    18,962.81/28,443.14 = 5,815.14/x
  3. Step 3: Cross multiply
    18,962.81x = 28,443.14 × 5,815.14
  4. Step 4: Simplify right side
    18,962.81x = 165,400,855.68
  5. Step 5: Solve for x
    x = 165,400,855.68/18,962.81
  6. Step 6: Final answer
    x = 8,722.38

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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.