Home / 21,288.54-29,377.98-11,728.26

Finding the Fourth Proportional to 21,288.54, 29,377.98 and 11,728.26

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Solution

The fourth proportional to 21,288.54, 29,377.98 and 11,728.26 is: 16,184.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.54 : 29,377.98 = 11,728.26 : x
  2. Step 2: Convert to fraction form
    21,288.54/29,377.98 = 11,728.26/x
  3. Step 3: Cross multiply
    21,288.54x = 29,377.98 × 11,728.26
  4. Step 4: Simplify right side
    21,288.54x = 344,552,587.71
  5. Step 5: Solve for x
    x = 344,552,587.71/21,288.54
  6. Step 6: Final answer
    x = 16,184.89

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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.