Home / 28,170.75-42,297.66-15,715.11

Finding the Fourth Proportional to 28,170.75, 42,297.66 and 15,715.11

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Solution

The fourth proportional to 28,170.75, 42,297.66 and 15,715.11 is: 23,595.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.75 : 42,297.66 = 15,715.11 : x
  2. Step 2: Convert to fraction form
    28,170.75/42,297.66 = 15,715.11/x
  3. Step 3: Cross multiply
    28,170.75x = 42,297.66 × 15,715.11
  4. Step 4: Simplify right side
    28,170.75x = 664,712,379.64
  5. Step 5: Solve for x
    x = 664,712,379.64/28,170.75
  6. Step 6: Final answer
    x = 23,595.84

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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.