Home / 21,288.06-29,377.62-11,856.96

Finding the Fourth Proportional to 21,288.06, 29,377.62 and 11,856.96

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Solution

The fourth proportional to 21,288.06, 29,377.62 and 11,856.96 is: 16,362.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.06 : 29,377.62 = 11,856.96 : x
  2. Step 2: Convert to fraction form
    21,288.06/29,377.62 = 11,856.96/x
  3. Step 3: Cross multiply
    21,288.06x = 29,377.62 × 11,856.96
  4. Step 4: Simplify right side
    21,288.06x = 348,329,265.24
  5. Step 5: Solve for x
    x = 348,329,265.24/21,288.06
  6. Step 6: Final answer
    x = 16,362.66

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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.