Home / 21,003.30-31,500.36-6,960.06

Finding the Fourth Proportional to 21,003.30, 31,500.36 and 6,960.06

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Solution

The fourth proportional to 21,003.30, 31,500.36 and 6,960.06 is: 10,438.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.30 : 31,500.36 = 6,960.06 : x
  2. Step 2: Convert to fraction form
    21,003.30/31,500.36 = 6,960.06/x
  3. Step 3: Cross multiply
    21,003.30x = 31,500.36 × 6,960.06
  4. Step 4: Simplify right side
    21,003.30x = 219,244,395.62
  5. Step 5: Solve for x
    x = 219,244,395.62/21,003.30
  6. Step 6: Final answer
    x = 10,438.57

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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.