Home / 10,420.97-14,380.76-5,705.15

Finding the Fourth Proportional to 10,420.97, 14,380.76 and 5,705.15

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Solution

The fourth proportional to 10,420.97, 14,380.76 and 5,705.15 is: 7,873.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.97 : 14,380.76 = 5,705.15 : x
  2. Step 2: Convert to fraction form
    10,420.97/14,380.76 = 5,705.15/x
  3. Step 3: Cross multiply
    10,420.97x = 14,380.76 × 5,705.15
  4. Step 4: Simplify right side
    10,420.97x = 82,044,335.27
  5. Step 5: Solve for x
    x = 82,044,335.27/10,420.97
  6. Step 6: Final answer
    x = 7,873.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.