Home / 21,308.45-31,961.35-6,516.20

Finding the Fourth Proportional to 21,308.45, 31,961.35 and 6,516.20

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Solution

The fourth proportional to 21,308.45, 31,961.35 and 6,516.20 is: 9,773.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.45 : 31,961.35 = 6,516.20 : x
  2. Step 2: Convert to fraction form
    21,308.45/31,961.35 = 6,516.20/x
  3. Step 3: Cross multiply
    21,308.45x = 31,961.35 × 6,516.20
  4. Step 4: Simplify right side
    21,308.45x = 208,266,372.77
  5. Step 5: Solve for x
    x = 208,266,372.77/21,308.45
  6. Step 6: Final answer
    x = 9,773.89

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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.