Home / 21,305.28-31,962.78-6,516.30

Finding the Fourth Proportional to 21,305.28, 31,962.78 and 6,516.30

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Solution

The fourth proportional to 21,305.28, 31,962.78 and 6,516.30 is: 9,775.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.28 : 31,962.78 = 6,516.30 : x
  2. Step 2: Convert to fraction form
    21,305.28/31,962.78 = 6,516.30/x
  3. Step 3: Cross multiply
    21,305.28x = 31,962.78 × 6,516.30
  4. Step 4: Simplify right side
    21,305.28x = 208,279,063.31
  5. Step 5: Solve for x
    x = 208,279,063.31/21,305.28
  6. Step 6: Final answer
    x = 9,775.94

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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.