Home / 22,087.58-30,438.87-15,789.02

Finding the Fourth Proportional to 22,087.58, 30,438.87 and 15,789.02

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Solution

The fourth proportional to 22,087.58, 30,438.87 and 15,789.02 is: 21,758.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,087.58 : 30,438.87 = 15,789.02 : x
  2. Step 2: Convert to fraction form
    22,087.58/30,438.87 = 15,789.02/x
  3. Step 3: Cross multiply
    22,087.58x = 30,438.87 × 15,789.02
  4. Step 4: Simplify right side
    22,087.58x = 480,599,927.21
  5. Step 5: Solve for x
    x = 480,599,927.21/22,087.58
  6. Step 6: Final answer
    x = 21,758.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.