Home / 21,330.72-31,996.11-7,476.48

Finding the Fourth Proportional to 21,330.72, 31,996.11 and 7,476.48

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Solution

The fourth proportional to 21,330.72, 31,996.11 and 7,476.48 is: 11,214.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.72 : 31,996.11 = 7,476.48 : x
  2. Step 2: Convert to fraction form
    21,330.72/31,996.11 = 7,476.48/x
  3. Step 3: Cross multiply
    21,330.72x = 31,996.11 × 7,476.48
  4. Step 4: Simplify right side
    21,330.72x = 239,218,276.49
  5. Step 5: Solve for x
    x = 239,218,276.49/21,330.72
  6. Step 6: Final answer
    x = 11,214.73

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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.