Home / 30,161.20-45,204.60-21,869.68

Finding the Fourth Proportional to 30,161.20, 45,204.60 and 21,869.68

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Solution

The fourth proportional to 30,161.20, 45,204.60 and 21,869.68 is: 32,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,161.20 : 45,204.60 = 21,869.68 : x
  2. Step 2: Convert to fraction form
    30,161.20/45,204.60 = 21,869.68/x
  3. Step 3: Cross multiply
    30,161.20x = 45,204.60 × 21,869.68
  4. Step 4: Simplify right side
    30,161.20x = 988,610,136.53
  5. Step 5: Solve for x
    x = 988,610,136.53/30,161.20
  6. Step 6: Final answer
    x = 32,777.55

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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.