Home / 30,168.20-45,280.20-15,388.13

Finding the Fourth Proportional to 30,168.20, 45,280.20 and 15,388.13

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Solution

The fourth proportional to 30,168.20, 45,280.20 and 15,388.13 is: 23,096.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,168.20 : 45,280.20 = 15,388.13 : x
  2. Step 2: Convert to fraction form
    30,168.20/45,280.20 = 15,388.13/x
  3. Step 3: Cross multiply
    30,168.20x = 45,280.20 × 15,388.13
  4. Step 4: Simplify right side
    30,168.20x = 696,777,377.63
  5. Step 5: Solve for x
    x = 696,777,377.63/30,168.20
  6. Step 6: Final answer
    x = 23,096.42

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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.