Home / 21,305.36-31,963.80-7,455.44

Finding the Fourth Proportional to 21,305.36, 31,963.80 and 7,455.44

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Solution

The fourth proportional to 21,305.36, 31,963.80 and 7,455.44 is: 11,185.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.36 : 31,963.80 = 7,455.44 : x
  2. Step 2: Convert to fraction form
    21,305.36/31,963.80 = 7,455.44/x
  3. Step 3: Cross multiply
    21,305.36x = 31,963.80 × 7,455.44
  4. Step 4: Simplify right side
    21,305.36x = 238,304,193.07
  5. Step 5: Solve for x
    x = 238,304,193.07/21,305.36
  6. Step 6: Final answer
    x = 11,185.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.