Home / 21,269.76-29,348.64-11,836.50

Finding the Fourth Proportional to 21,269.76, 29,348.64 and 11,836.50

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Solution

The fourth proportional to 21,269.76, 29,348.64 and 11,836.50 is: 16,332.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.76 : 29,348.64 = 11,836.50 : x
  2. Step 2: Convert to fraction form
    21,269.76/29,348.64 = 11,836.50/x
  3. Step 3: Cross multiply
    21,269.76x = 29,348.64 × 11,836.50
  4. Step 4: Simplify right side
    21,269.76x = 347,385,177.36
  5. Step 5: Solve for x
    x = 347,385,177.36/21,269.76
  6. Step 6: Final answer
    x = 16,332.35

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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.