Home / 28,505.96-42,712.19-20,145.14

Finding the Fourth Proportional to 28,505.96, 42,712.19 and 20,145.14

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Solution

The fourth proportional to 28,505.96, 42,712.19 and 20,145.14 is: 30,184.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.96 : 42,712.19 = 20,145.14 : x
  2. Step 2: Convert to fraction form
    28,505.96/42,712.19 = 20,145.14/x
  3. Step 3: Cross multiply
    28,505.96x = 42,712.19 × 20,145.14
  4. Step 4: Simplify right side
    28,505.96x = 860,442,732.97
  5. Step 5: Solve for x
    x = 860,442,732.97/28,505.96
  6. Step 6: Final answer
    x = 30,184.67

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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.