Home / 17,909.12-26,866.44-9,139.28

Finding the Fourth Proportional to 17,909.12, 26,866.44 and 9,139.28

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Solution

The fourth proportional to 17,909.12, 26,866.44 and 9,139.28 is: 13,710.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,909.12 : 26,866.44 = 9,139.28 : x
  2. Step 2: Convert to fraction form
    17,909.12/26,866.44 = 9,139.28/x
  3. Step 3: Cross multiply
    17,909.12x = 26,866.44 × 9,139.28
  4. Step 4: Simplify right side
    17,909.12x = 245,539,917.76
  5. Step 5: Solve for x
    x = 245,539,917.76/17,909.12
  6. Step 6: Final answer
    x = 13,710.33

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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.