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Finding the Fourth Proportional to 21,963.32, 32,945.38 and 7,924.40

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Solution

The fourth proportional to 21,963.32, 32,945.38 and 7,924.40 is: 11,886.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.32 : 32,945.38 = 7,924.40 : x
  2. Step 2: Convert to fraction form
    21,963.32/32,945.38 = 7,924.40/x
  3. Step 3: Cross multiply
    21,963.32x = 32,945.38 × 7,924.40
  4. Step 4: Simplify right side
    21,963.32x = 261,072,369.27
  5. Step 5: Solve for x
    x = 261,072,369.27/21,963.32
  6. Step 6: Final answer
    x = 11,886.74

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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.