Home / 20,198.84-30,312.10-7,051.21

Finding the Fourth Proportional to 20,198.84, 30,312.10 and 7,051.21

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Solution

The fourth proportional to 20,198.84, 30,312.10 and 7,051.21 is: 10,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.84 : 30,312.10 = 7,051.21 : x
  2. Step 2: Convert to fraction form
    20,198.84/30,312.10 = 7,051.21/x
  3. Step 3: Cross multiply
    20,198.84x = 30,312.10 × 7,051.21
  4. Step 4: Simplify right side
    20,198.84x = 213,736,982.64
  5. Step 5: Solve for x
    x = 213,736,982.64/20,198.84
  6. Step 6: Final answer
    x = 10,581.65

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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.