Home / 21,279.66-29,366.01-11,848.22

Finding the Fourth Proportional to 21,279.66, 29,366.01 and 11,848.22

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Solution

The fourth proportional to 21,279.66, 29,366.01 and 11,848.22 is: 16,350.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.66 : 29,366.01 = 11,848.22 : x
  2. Step 2: Convert to fraction form
    21,279.66/29,366.01 = 11,848.22/x
  3. Step 3: Cross multiply
    21,279.66x = 29,366.01 × 11,848.22
  4. Step 4: Simplify right side
    21,279.66x = 347,935,020.42
  5. Step 5: Solve for x
    x = 347,935,020.42/21,279.66
  6. Step 6: Final answer
    x = 16,350.59

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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.