Home / 20,135.28-30,200.57-5,345.34

Finding the Fourth Proportional to 20,135.28, 30,200.57 and 5,345.34

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Solution

The fourth proportional to 20,135.28, 30,200.57 and 5,345.34 is: 8,017.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.28 : 30,200.57 = 5,345.34 : x
  2. Step 2: Convert to fraction form
    20,135.28/30,200.57 = 5,345.34/x
  3. Step 3: Cross multiply
    20,135.28x = 30,200.57 × 5,345.34
  4. Step 4: Simplify right side
    20,135.28x = 161,432,314.84
  5. Step 5: Solve for x
    x = 161,432,314.84/20,135.28
  6. Step 6: Final answer
    x = 8,017.39

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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.