Home / 20,115.18-30,171.42-6,075.72

Finding the Fourth Proportional to 20,115.18, 30,171.42 and 6,075.72

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Solution

The fourth proportional to 20,115.18, 30,171.42 and 6,075.72 is: 9,113.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.18 : 30,171.42 = 6,075.72 : x
  2. Step 2: Convert to fraction form
    20,115.18/30,171.42 = 6,075.72/x
  3. Step 3: Cross multiply
    20,115.18x = 30,171.42 × 6,075.72
  4. Step 4: Simplify right side
    20,115.18x = 183,313,099.92
  5. Step 5: Solve for x
    x = 183,313,099.92/20,115.18
  6. Step 6: Final answer
    x = 9,113.17

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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.