Home / 18,686.09-28,028.68-5,538.58

Finding the Fourth Proportional to 18,686.09, 28,028.68 and 5,538.58

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Solution

The fourth proportional to 18,686.09, 28,028.68 and 5,538.58 is: 8,307.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.09 : 28,028.68 = 5,538.58 : x
  2. Step 2: Convert to fraction form
    18,686.09/28,028.68 = 5,538.58/x
  3. Step 3: Cross multiply
    18,686.09x = 28,028.68 × 5,538.58
  4. Step 4: Simplify right side
    18,686.09x = 155,239,033.71
  5. Step 5: Solve for x
    x = 155,239,033.71/18,686.09
  6. Step 6: Final answer
    x = 8,307.73

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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.