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Finding the Fourth Proportional to 21,339.62, 32,009.42 and 7,299.77

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Solution

The fourth proportional to 21,339.62, 32,009.42 and 7,299.77 is: 10,949.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.62 : 32,009.42 = 7,299.77 : x
  2. Step 2: Convert to fraction form
    21,339.62/32,009.42 = 7,299.77/x
  3. Step 3: Cross multiply
    21,339.62x = 32,009.42 × 7,299.77
  4. Step 4: Simplify right side
    21,339.62x = 233,661,502.11
  5. Step 5: Solve for x
    x = 233,661,502.11/21,339.62
  6. Step 6: Final answer
    x = 10,949.66

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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.