Home / 20,956.44-28,934.70-13,897.56

Finding the Fourth Proportional to 20,956.44, 28,934.70 and 13,897.56

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Solution

The fourth proportional to 20,956.44, 28,934.70 and 13,897.56 is: 19,188.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.44 : 28,934.70 = 13,897.56 : x
  2. Step 2: Convert to fraction form
    20,956.44/28,934.70 = 13,897.56/x
  3. Step 3: Cross multiply
    20,956.44x = 28,934.70 × 13,897.56
  4. Step 4: Simplify right side
    20,956.44x = 402,121,729.33
  5. Step 5: Solve for x
    x = 402,121,729.33/20,956.44
  6. Step 6: Final answer
    x = 19,188.46

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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.