Home / 21,090.96-31,636.49-6,299.91

Finding the Fourth Proportional to 21,090.96, 31,636.49 and 6,299.91

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Solution

The fourth proportional to 21,090.96, 31,636.49 and 6,299.91 is: 9,449.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.96 : 31,636.49 = 6,299.91 : x
  2. Step 2: Convert to fraction form
    21,090.96/31,636.49 = 6,299.91/x
  3. Step 3: Cross multiply
    21,090.96x = 31,636.49 × 6,299.91
  4. Step 4: Simplify right side
    21,090.96x = 199,307,008.22
  5. Step 5: Solve for x
    x = 199,307,008.22/21,090.96
  6. Step 6: Final answer
    x = 9,449.88

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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.