Home / 21,131.04-31,697.64-6,338.40

Finding the Fourth Proportional to 21,131.04, 31,697.64 and 6,338.40

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Solution

The fourth proportional to 21,131.04, 31,697.64 and 6,338.40 is: 9,507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.04 : 31,697.64 = 6,338.40 : x
  2. Step 2: Convert to fraction form
    21,131.04/31,697.64 = 6,338.40/x
  3. Step 3: Cross multiply
    21,131.04x = 31,697.64 × 6,338.40
  4. Step 4: Simplify right side
    21,131.04x = 200,912,321.38
  5. Step 5: Solve for x
    x = 200,912,321.38/21,131.04
  6. Step 6: Final answer
    x = 9,507.92

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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.