Home / 20,111.10-30,166.65-11,795.10

Finding the Fourth Proportional to 20,111.10, 30,166.65 and 11,795.10

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Solution

The fourth proportional to 20,111.10, 30,166.65 and 11,795.10 is: 17,692.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.10 : 30,166.65 = 11,795.10 : x
  2. Step 2: Convert to fraction form
    20,111.10/30,166.65 = 11,795.10/x
  3. Step 3: Cross multiply
    20,111.10x = 30,166.65 × 11,795.10
  4. Step 4: Simplify right side
    20,111.10x = 355,818,653.42
  5. Step 5: Solve for x
    x = 355,818,653.42/20,111.10
  6. Step 6: Final answer
    x = 17,692.65

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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.