Home / 21,325.72-31,988.54-11,469.64

Finding the Fourth Proportional to 21,325.72, 31,988.54 and 11,469.64

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Solution

The fourth proportional to 21,325.72, 31,988.54 and 11,469.64 is: 17,204.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.72 : 31,988.54 = 11,469.64 : x
  2. Step 2: Convert to fraction form
    21,325.72/31,988.54 = 11,469.64/x
  3. Step 3: Cross multiply
    21,325.72x = 31,988.54 × 11,469.64
  4. Step 4: Simplify right side
    21,325.72x = 366,897,037.93
  5. Step 5: Solve for x
    x = 366,897,037.93/21,325.72
  6. Step 6: Final answer
    x = 17,204.44

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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.