Home / 21,663.18-32,420.84-18,157.16

Finding the Fourth Proportional to 21,663.18, 32,420.84 and 18,157.16

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Solution

The fourth proportional to 21,663.18, 32,420.84 and 18,157.16 is: 27,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.18 : 32,420.84 = 18,157.16 : x
  2. Step 2: Convert to fraction form
    21,663.18/32,420.84 = 18,157.16/x
  3. Step 3: Cross multiply
    21,663.18x = 32,420.84 × 18,157.16
  4. Step 4: Simplify right side
    21,663.18x = 588,670,379.21
  5. Step 5: Solve for x
    x = 588,670,379.21/21,663.18
  6. Step 6: Final answer
    x = 27,173.78

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1.5x scale

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.