Home / 21,553.88-32,339.10-8,415.56

Finding the Fourth Proportional to 21,553.88, 32,339.10 and 8,415.56

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Solution

The fourth proportional to 21,553.88, 32,339.10 and 8,415.56 is: 12,626.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.88 : 32,339.10 = 8,415.56 : x
  2. Step 2: Convert to fraction form
    21,553.88/32,339.10 = 8,415.56/x
  3. Step 3: Cross multiply
    21,553.88x = 32,339.10 × 8,415.56
  4. Step 4: Simplify right side
    21,553.88x = 272,151,636.40
  5. Step 5: Solve for x
    x = 272,151,636.40/21,553.88
  6. Step 6: Final answer
    x = 12,626.57

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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.