Home / 21,002.62-31,488.48-9,903.04

Finding the Fourth Proportional to 21,002.62, 31,488.48 and 9,903.04

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Solution

The fourth proportional to 21,002.62, 31,488.48 and 9,903.04 is: 14,847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.62 : 31,488.48 = 9,903.04 : x
  2. Step 2: Convert to fraction form
    21,002.62/31,488.48 = 9,903.04/x
  3. Step 3: Cross multiply
    21,002.62x = 31,488.48 × 9,903.04
  4. Step 4: Simplify right side
    21,002.62x = 311,831,676.98
  5. Step 5: Solve for x
    x = 311,831,676.98/21,002.62
  6. Step 6: Final answer
    x = 14,847.28

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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.