Home / 20,897.46-28,837.74-11,945.79

Finding the Fourth Proportional to 20,897.46, 28,837.74 and 11,945.79

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Solution

The fourth proportional to 20,897.46, 28,837.74 and 11,945.79 is: 16,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.46 : 28,837.74 = 11,945.79 : x
  2. Step 2: Convert to fraction form
    20,897.46/28,837.74 = 11,945.79/x
  3. Step 3: Cross multiply
    20,897.46x = 28,837.74 × 11,945.79
  4. Step 4: Simplify right side
    20,897.46x = 344,489,586.11
  5. Step 5: Solve for x
    x = 344,489,586.11/20,897.46
  6. Step 6: Final answer
    x = 16,484.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.