Home / 30,151.24-45,217.58-20,851

Finding the Fourth Proportional to 30,151.24, 45,217.58 and 20,851

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Solution

The fourth proportional to 30,151.24, 45,217.58 and 20,851 is: 31,270.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.24 : 45,217.58 = 20,851 : x
  2. Step 2: Convert to fraction form
    30,151.24/45,217.58 = 20,851/x
  3. Step 3: Cross multiply
    30,151.24x = 45,217.58 × 20,851
  4. Step 4: Simplify right side
    30,151.24x = 942,831,760.58
  5. Step 5: Solve for x
    x = 942,831,760.58/30,151.24
  6. Step 6: Final answer
    x = 31,270.08

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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.