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Finding the Fourth Proportional to 12,040.32, 18,060.48 and 5,880

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Solution

The fourth proportional to 12,040.32, 18,060.48 and 5,880 is: 8,820

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,040.32 : 18,060.48 = 5,880 : x
  2. Step 2: Convert to fraction form
    12,040.32/18,060.48 = 5,880/x
  3. Step 3: Cross multiply
    12,040.32x = 18,060.48 × 5,880
  4. Step 4: Simplify right side
    12,040.32x = 106,195,622.40
  5. Step 5: Solve for x
    x = 106,195,622.40/12,040.32
  6. Step 6: Final answer
    x = 8,820

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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.