Home / 10,932.12-16,399.80-5,090.40

Finding the Fourth Proportional to 10,932.12, 16,399.80 and 5,090.40

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Solution

The fourth proportional to 10,932.12, 16,399.80 and 5,090.40 is: 7,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,932.12 : 16,399.80 = 5,090.40 : x
  2. Step 2: Convert to fraction form
    10,932.12/16,399.80 = 5,090.40/x
  3. Step 3: Cross multiply
    10,932.12x = 16,399.80 × 5,090.40
  4. Step 4: Simplify right side
    10,932.12x = 83,481,541.92
  5. Step 5: Solve for x
    x = 83,481,541.92/10,932.12
  6. Step 6: Final answer
    x = 7,636.35

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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.