Home / 21,644.78-32,471.35-8,316.77

Finding the Fourth Proportional to 21,644.78, 32,471.35 and 8,316.77

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Solution

The fourth proportional to 21,644.78, 32,471.35 and 8,316.77 is: 12,476.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.78 : 32,471.35 = 8,316.77 : x
  2. Step 2: Convert to fraction form
    21,644.78/32,471.35 = 8,316.77/x
  3. Step 3: Cross multiply
    21,644.78x = 32,471.35 × 8,316.77
  4. Step 4: Simplify right side
    21,644.78x = 270,056,566.39
  5. Step 5: Solve for x
    x = 270,056,566.39/21,644.78
  6. Step 6: Final answer
    x = 12,476.76

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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.