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Finding the Fourth Proportional to 21,999.89, 33,002.39 and 7,966.51

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Solution

The fourth proportional to 21,999.89, 33,002.39 and 7,966.51 is: 11,950.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.89 : 33,002.39 = 7,966.51 : x
  2. Step 2: Convert to fraction form
    21,999.89/33,002.39 = 7,966.51/x
  3. Step 3: Cross multiply
    21,999.89x = 33,002.39 × 7,966.51
  4. Step 4: Simplify right side
    21,999.89x = 262,913,807.37
  5. Step 5: Solve for x
    x = 262,913,807.37/21,999.89
  6. Step 6: Final answer
    x = 11,950.69

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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.