Home / 9,991.29-14,989.28-2,971.36

Finding the Fourth Proportional to 9,991.29, 14,989.28 and 2,971.36

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Solution

The fourth proportional to 9,991.29, 14,989.28 and 2,971.36 is: 4,457.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.29 : 14,989.28 = 2,971.36 : x
  2. Step 2: Convert to fraction form
    9,991.29/14,989.28 = 2,971.36/x
  3. Step 3: Cross multiply
    9,991.29x = 14,989.28 × 2,971.36
  4. Step 4: Simplify right side
    9,991.29x = 44,538,517.10
  5. Step 5: Solve for x
    x = 44,538,517.10/9,991.29
  6. Step 6: Final answer
    x = 4,457.73

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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.