Home / 21,318.12-31,963.51-8,846.75

Finding the Fourth Proportional to 21,318.12, 31,963.51 and 8,846.75

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Solution

The fourth proportional to 21,318.12, 31,963.51 and 8,846.75 is: 13,264.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.12 : 31,963.51 = 8,846.75 : x
  2. Step 2: Convert to fraction form
    21,318.12/31,963.51 = 8,846.75/x
  3. Step 3: Cross multiply
    21,318.12x = 31,963.51 × 8,846.75
  4. Step 4: Simplify right side
    21,318.12x = 282,773,239.88
  5. Step 5: Solve for x
    x = 282,773,239.88/21,318.12
  6. Step 6: Final answer
    x = 13,264.45

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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.