Home / 21,943.35-32,929.20-12,089.70

Finding the Fourth Proportional to 21,943.35, 32,929.20 and 12,089.70

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Solution

The fourth proportional to 21,943.35, 32,929.20 and 12,089.70 is: 18,142.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.35 : 32,929.20 = 12,089.70 : x
  2. Step 2: Convert to fraction form
    21,943.35/32,929.20 = 12,089.70/x
  3. Step 3: Cross multiply
    21,943.35x = 32,929.20 × 12,089.70
  4. Step 4: Simplify right side
    21,943.35x = 398,104,149.24
  5. Step 5: Solve for x
    x = 398,104,149.24/21,943.35
  6. Step 6: Final answer
    x = 18,142.36

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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.