Home / 21,003.30-31,494.01-9,907.01

Finding the Fourth Proportional to 21,003.30, 31,494.01 and 9,907.01

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Solution

The fourth proportional to 21,003.30, 31,494.01 and 9,907.01 is: 14,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.30 : 31,494.01 = 9,907.01 : x
  2. Step 2: Convert to fraction form
    21,003.30/31,494.01 = 9,907.01/x
  3. Step 3: Cross multiply
    21,003.30x = 31,494.01 × 9,907.01
  4. Step 4: Simplify right side
    21,003.30x = 312,011,472.01
  5. Step 5: Solve for x
    x = 312,011,472.01/21,003.30
  6. Step 6: Final answer
    x = 14,855.35

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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.