Home / 20,716.56-31,068.36-7,565.94

Finding the Fourth Proportional to 20,716.56, 31,068.36 and 7,565.94

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Solution

The fourth proportional to 20,716.56, 31,068.36 and 7,565.94 is: 11,346.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.56 : 31,068.36 = 7,565.94 : x
  2. Step 2: Convert to fraction form
    20,716.56/31,068.36 = 7,565.94/x
  3. Step 3: Cross multiply
    20,716.56x = 31,068.36 × 7,565.94
  4. Step 4: Simplify right side
    20,716.56x = 235,061,347.66
  5. Step 5: Solve for x
    x = 235,061,347.66/20,716.56
  6. Step 6: Final answer
    x = 11,346.54

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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.