Home / 21,269.71-29,351.89-11,838.27

Finding the Fourth Proportional to 21,269.71, 29,351.89 and 11,838.27

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Solution

The fourth proportional to 21,269.71, 29,351.89 and 11,838.27 is: 16,336.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.71 : 29,351.89 = 11,838.27 : x
  2. Step 2: Convert to fraction form
    21,269.71/29,351.89 = 11,838.27/x
  3. Step 3: Cross multiply
    21,269.71x = 29,351.89 × 11,838.27
  4. Step 4: Simplify right side
    21,269.71x = 347,475,598.83
  5. Step 5: Solve for x
    x = 347,475,598.83/21,269.71
  6. Step 6: Final answer
    x = 16,336.64

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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.