Home / 20,388.66-30,586.23-8,701.98

Finding the Fourth Proportional to 20,388.66, 30,586.23 and 8,701.98

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Solution

The fourth proportional to 20,388.66, 30,586.23 and 8,701.98 is: 13,054.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.66 : 30,586.23 = 8,701.98 : x
  2. Step 2: Convert to fraction form
    20,388.66/30,586.23 = 8,701.98/x
  3. Step 3: Cross multiply
    20,388.66x = 30,586.23 × 8,701.98
  4. Step 4: Simplify right side
    20,388.66x = 266,160,761.74
  5. Step 5: Solve for x
    x = 266,160,761.74/20,388.66
  6. Step 6: Final answer
    x = 13,054.35

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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.