Home / 20,932.33-31,374.09-7,776.31

Finding the Fourth Proportional to 20,932.33, 31,374.09 and 7,776.31

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Solution

The fourth proportional to 20,932.33, 31,374.09 and 7,776.31 is: 11,655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.33 : 31,374.09 = 7,776.31 : x
  2. Step 2: Convert to fraction form
    20,932.33/31,374.09 = 7,776.31/x
  3. Step 3: Cross multiply
    20,932.33x = 31,374.09 × 7,776.31
  4. Step 4: Simplify right side
    20,932.33x = 243,974,649.81
  5. Step 5: Solve for x
    x = 243,974,649.81/20,932.33
  6. Step 6: Final answer
    x = 11,655.40

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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.