Home / 19,943.25-29,921.76-8,857.70

Finding the Fourth Proportional to 19,943.25, 29,921.76 and 8,857.70

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Solution

The fourth proportional to 19,943.25, 29,921.76 and 8,857.70 is: 13,289.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.25 : 29,921.76 = 8,857.70 : x
  2. Step 2: Convert to fraction form
    19,943.25/29,921.76 = 8,857.70/x
  3. Step 3: Cross multiply
    19,943.25x = 29,921.76 × 8,857.70
  4. Step 4: Simplify right side
    19,943.25x = 265,037,973.55
  5. Step 5: Solve for x
    x = 265,037,973.55/19,943.25
  6. Step 6: Final answer
    x = 13,289.61

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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.