Home / 19,680.66-29,520.45-4,889.43

Finding the Fourth Proportional to 19,680.66, 29,520.45 and 4,889.43

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Solution

The fourth proportional to 19,680.66, 29,520.45 and 4,889.43 is: 7,334.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.66 : 29,520.45 = 4,889.43 : x
  2. Step 2: Convert to fraction form
    19,680.66/29,520.45 = 4,889.43/x
  3. Step 3: Cross multiply
    19,680.66x = 29,520.45 × 4,889.43
  4. Step 4: Simplify right side
    19,680.66x = 144,338,173.84
  5. Step 5: Solve for x
    x = 144,338,173.84/19,680.66
  6. Step 6: Final answer
    x = 7,334.01

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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.