Home / 21,275.64-29,359.80-11,844

Finding the Fourth Proportional to 21,275.64, 29,359.80 and 11,844

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Solution

The fourth proportional to 21,275.64, 29,359.80 and 11,844 is: 16,344.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.64 : 29,359.80 = 11,844 : x
  2. Step 2: Convert to fraction form
    21,275.64/29,359.80 = 11,844/x
  3. Step 3: Cross multiply
    21,275.64x = 29,359.80 × 11,844
  4. Step 4: Simplify right side
    21,275.64x = 347,737,471.20
  5. Step 5: Solve for x
    x = 347,737,471.20/21,275.64
  6. Step 6: Final answer
    x = 16,344.40

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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.