Home / 21,472.39-32,186.60-8,999.64

Finding the Fourth Proportional to 21,472.39, 32,186.60 and 8,999.64

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Solution

The fourth proportional to 21,472.39, 32,186.60 and 8,999.64 is: 13,490.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.39 : 32,186.60 = 8,999.64 : x
  2. Step 2: Convert to fraction form
    21,472.39/32,186.60 = 8,999.64/x
  3. Step 3: Cross multiply
    21,472.39x = 32,186.60 × 8,999.64
  4. Step 4: Simplify right side
    21,472.39x = 289,667,801.57
  5. Step 5: Solve for x
    x = 289,667,801.57/21,472.39
  6. Step 6: Final answer
    x = 13,490.24

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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.