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Finding the Fourth Proportional to 30,360.42, 45,489.60 and 21,551.67

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Solution

The fourth proportional to 30,360.42, 45,489.60 and 21,551.67 is: 32,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,360.42 : 45,489.60 = 21,551.67 : x
  2. Step 2: Convert to fraction form
    30,360.42/45,489.60 = 21,551.67/x
  3. Step 3: Cross multiply
    30,360.42x = 45,489.60 × 21,551.67
  4. Step 4: Simplify right side
    30,360.42x = 980,376,847.63
  5. Step 5: Solve for x
    x = 980,376,847.63/30,360.42
  6. Step 6: Final answer
    x = 32,291.28

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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.