Home / 20,102.87-30,150.21-7,618.59

Finding the Fourth Proportional to 20,102.87, 30,150.21 and 7,618.59

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Solution

The fourth proportional to 20,102.87, 30,150.21 and 7,618.59 is: 11,426.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.87 : 30,150.21 = 7,618.59 : x
  2. Step 2: Convert to fraction form
    20,102.87/30,150.21 = 7,618.59/x
  3. Step 3: Cross multiply
    20,102.87x = 30,150.21 × 7,618.59
  4. Step 4: Simplify right side
    20,102.87x = 229,702,088.40
  5. Step 5: Solve for x
    x = 229,702,088.40/20,102.87
  6. Step 6: Final answer
    x = 11,426.33

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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.