Home / 20,698.88-31,040.76-7,547.36

Finding the Fourth Proportional to 20,698.88, 31,040.76 and 7,547.36

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Solution

The fourth proportional to 20,698.88, 31,040.76 and 7,547.36 is: 11,318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.88 : 31,040.76 = 7,547.36 : x
  2. Step 2: Convert to fraction form
    20,698.88/31,040.76 = 7,547.36/x
  3. Step 3: Cross multiply
    20,698.88x = 31,040.76 × 7,547.36
  4. Step 4: Simplify right side
    20,698.88x = 234,275,790.39
  5. Step 5: Solve for x
    x = 234,275,790.39/20,698.88
  6. Step 6: Final answer
    x = 11,318.28

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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.