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Finding the Fourth Proportional to 22,972.72, 31,679.02 and 21,633.32

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Solution

The fourth proportional to 22,972.72, 31,679.02 and 21,633.32 is: 29,832.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,972.72 : 31,679.02 = 21,633.32 : x
  2. Step 2: Convert to fraction form
    22,972.72/31,679.02 = 21,633.32/x
  3. Step 3: Cross multiply
    22,972.72x = 31,679.02 × 21,633.32
  4. Step 4: Simplify right side
    22,972.72x = 685,322,376.95
  5. Step 5: Solve for x
    x = 685,322,376.95/22,972.72
  6. Step 6: Final answer
    x = 29,832.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.