Home / 20,829.36-31,262.52-9,742.08

Finding the Fourth Proportional to 20,829.36, 31,262.52 and 9,742.08

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Solution

The fourth proportional to 20,829.36, 31,262.52 and 9,742.08 is: 14,621.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.36 : 31,262.52 = 9,742.08 : x
  2. Step 2: Convert to fraction form
    20,829.36/31,262.52 = 9,742.08/x
  3. Step 3: Cross multiply
    20,829.36x = 31,262.52 × 9,742.08
  4. Step 4: Simplify right side
    20,829.36x = 304,561,970.84
  5. Step 5: Solve for x
    x = 304,561,970.84/20,829.36
  6. Step 6: Final answer
    x = 14,621.76

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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.