Home / 10,966.40-16,439.80-4,039.28

Finding the Fourth Proportional to 10,966.40, 16,439.80 and 4,039.28

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Solution

The fourth proportional to 10,966.40, 16,439.80 and 4,039.28 is: 6,055.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,966.40 : 16,439.80 = 4,039.28 : x
  2. Step 2: Convert to fraction form
    10,966.40/16,439.80 = 4,039.28/x
  3. Step 3: Cross multiply
    10,966.40x = 16,439.80 × 4,039.28
  4. Step 4: Simplify right side
    10,966.40x = 66,404,955.34
  5. Step 5: Solve for x
    x = 66,404,955.34/10,966.40
  6. Step 6: Final answer
    x = 6,055.31

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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.