Home / 21,385.11-32,060.34-8,914.47

Finding the Fourth Proportional to 21,385.11, 32,060.34 and 8,914.47

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Solution

The fourth proportional to 21,385.11, 32,060.34 and 8,914.47 is: 13,364.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.11 : 32,060.34 = 8,914.47 : x
  2. Step 2: Convert to fraction form
    21,385.11/32,060.34 = 8,914.47/x
  3. Step 3: Cross multiply
    21,385.11x = 32,060.34 × 8,914.47
  4. Step 4: Simplify right side
    21,385.11x = 285,800,939.12
  5. Step 5: Solve for x
    x = 285,800,939.12/21,385.11
  6. Step 6: Final answer
    x = 13,364.48

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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.