Home / 21,005.00-31,505.76-6,960.44

Finding the Fourth Proportional to 21,005.00, 31,505.76 and 6,960.44

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Solution

The fourth proportional to 21,005.00, 31,505.76 and 6,960.44 is: 10,440.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005.00 : 31,505.76 = 6,960.44 : x
  2. Step 2: Convert to fraction form
    21,005.00/31,505.76 = 6,960.44/x
  3. Step 3: Cross multiply
    21,005.00x = 31,505.76 × 6,960.44
  4. Step 4: Simplify right side
    21,005.00x = 219,293,794.61
  5. Step 5: Solve for x
    x = 219,293,794.61/21,005.00
  6. Step 6: Final answer
    x = 10,440.08

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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.