Home / 15,764.18-21,764.70-9,803.96

Finding the Fourth Proportional to 15,764.18, 21,764.70 and 9,803.96

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Solution

The fourth proportional to 15,764.18, 21,764.70 and 9,803.96 is: 13,535.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.18 : 21,764.70 = 9,803.96 : x
  2. Step 2: Convert to fraction form
    15,764.18/21,764.70 = 9,803.96/x
  3. Step 3: Cross multiply
    15,764.18x = 21,764.70 × 9,803.96
  4. Step 4: Simplify right side
    15,764.18x = 213,380,248.21
  5. Step 5: Solve for x
    x = 213,380,248.21/15,764.18
  6. Step 6: Final answer
    x = 13,535.77

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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.