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Finding the Fourth Proportional to 30,361.42, 45,491.10 and 21,552.67

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Solution

The fourth proportional to 30,361.42, 45,491.10 and 21,552.67 is: 32,292.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,361.42 : 45,491.10 = 21,552.67 : x
  2. Step 2: Convert to fraction form
    30,361.42/45,491.10 = 21,552.67/x
  3. Step 3: Cross multiply
    30,361.42x = 45,491.10 × 21,552.67
  4. Step 4: Simplify right side
    30,361.42x = 980,454,666.24
  5. Step 5: Solve for x
    x = 980,454,666.24/30,361.42
  6. Step 6: Final answer
    x = 32,292.78

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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.