Home / 20,761.84-31,116.84-10,376.56

Finding the Fourth Proportional to 20,761.84, 31,116.84 and 10,376.56

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Solution

The fourth proportional to 20,761.84, 31,116.84 and 10,376.56 is: 15,551.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.84 : 31,116.84 = 10,376.56 : x
  2. Step 2: Convert to fraction form
    20,761.84/31,116.84 = 10,376.56/x
  3. Step 3: Cross multiply
    20,761.84x = 31,116.84 × 10,376.56
  4. Step 4: Simplify right side
    20,761.84x = 322,885,757.27
  5. Step 5: Solve for x
    x = 322,885,757.27/20,761.84
  6. Step 6: Final answer
    x = 15,551.89

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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.