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Finding the Fourth Proportional to 30,610.48, 45,915.72 and 10,889.21

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Solution

The fourth proportional to 30,610.48, 45,915.72 and 10,889.21 is: 16,333.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,610.48 : 45,915.72 = 10,889.21 : x
  2. Step 2: Convert to fraction form
    30,610.48/45,915.72 = 10,889.21/x
  3. Step 3: Cross multiply
    30,610.48x = 45,915.72 × 10,889.21
  4. Step 4: Simplify right side
    30,610.48x = 499,985,938.76
  5. Step 5: Solve for x
    x = 499,985,938.76/30,610.48
  6. Step 6: Final answer
    x = 16,333.81

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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.