Home / 21,677.80-32,516.70-12,320.68

Finding the Fourth Proportional to 21,677.80, 32,516.70 and 12,320.68

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Solution

The fourth proportional to 21,677.80, 32,516.70 and 12,320.68 is: 18,481.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,677.80 : 32,516.70 = 12,320.68 : x
  2. Step 2: Convert to fraction form
    21,677.80/32,516.70 = 12,320.68/x
  3. Step 3: Cross multiply
    21,677.80x = 32,516.70 × 12,320.68
  4. Step 4: Simplify right side
    21,677.80x = 400,627,855.36
  5. Step 5: Solve for x
    x = 400,627,855.36/21,677.80
  6. Step 6: Final answer
    x = 18,481.02

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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.