Home / 19,921.28-29,875.03-8,835.72

Finding the Fourth Proportional to 19,921.28, 29,875.03 and 8,835.72

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Solution

The fourth proportional to 19,921.28, 29,875.03 and 8,835.72 is: 13,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.28 : 29,875.03 = 8,835.72 : x
  2. Step 2: Convert to fraction form
    19,921.28/29,875.03 = 8,835.72/x
  3. Step 3: Cross multiply
    19,921.28x = 29,875.03 × 8,835.72
  4. Step 4: Simplify right side
    19,921.28x = 263,967,377.98
  5. Step 5: Solve for x
    x = 263,967,377.98/19,921.28
  6. Step 6: Final answer
    x = 13,250.53

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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.