Home / 10,742.19-16,112.64-6,387.36

Finding the Fourth Proportional to 10,742.19, 16,112.64 and 6,387.36

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Solution

The fourth proportional to 10,742.19, 16,112.64 and 6,387.36 is: 9,580.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,742.19 : 16,112.64 = 6,387.36 : x
  2. Step 2: Convert to fraction form
    10,742.19/16,112.64 = 6,387.36/x
  3. Step 3: Cross multiply
    10,742.19x = 16,112.64 × 6,387.36
  4. Step 4: Simplify right side
    10,742.19x = 102,917,200.29
  5. Step 5: Solve for x
    x = 102,917,200.29/10,742.19
  6. Step 6: Final answer
    x = 9,580.65

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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.