Home / 20,100.43-30,152.10-5,309.16

Finding the Fourth Proportional to 20,100.43, 30,152.10 and 5,309.16

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Solution

The fourth proportional to 20,100.43, 30,152.10 and 5,309.16 is: 7,964.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.43 : 30,152.10 = 5,309.16 : x
  2. Step 2: Convert to fraction form
    20,100.43/30,152.10 = 5,309.16/x
  3. Step 3: Cross multiply
    20,100.43x = 30,152.10 × 5,309.16
  4. Step 4: Simplify right side
    20,100.43x = 160,082,200.21
  5. Step 5: Solve for x
    x = 160,082,200.21/20,100.43
  6. Step 6: Final answer
    x = 7,964.12

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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.