Home / 21,301.28-31,956.78-6,512.30

Finding the Fourth Proportional to 21,301.28, 31,956.78 and 6,512.30

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Solution

The fourth proportional to 21,301.28, 31,956.78 and 6,512.30 is: 9,769.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.28 : 31,956.78 = 6,512.30 : x
  2. Step 2: Convert to fraction form
    21,301.28/31,956.78 = 6,512.30/x
  3. Step 3: Cross multiply
    21,301.28x = 31,956.78 × 6,512.30
  4. Step 4: Simplify right side
    21,301.28x = 208,112,138.39
  5. Step 5: Solve for x
    x = 208,112,138.39/21,301.28
  6. Step 6: Final answer
    x = 9,769.94

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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.