Home / 38,646.06-57,977.40-11,991.50

Finding the Fourth Proportional to 38,646.06, 57,977.40 and 11,991.50

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Solution

The fourth proportional to 38,646.06, 57,977.40 and 11,991.50 is: 17,989.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,646.06 : 57,977.40 = 11,991.50 : x
  2. Step 2: Convert to fraction form
    38,646.06/57,977.40 = 11,991.50/x
  3. Step 3: Cross multiply
    38,646.06x = 57,977.40 × 11,991.50
  4. Step 4: Simplify right side
    38,646.06x = 695,235,702.21
  5. Step 5: Solve for x
    x = 695,235,702.21/38,646.06
  6. Step 6: Final answer
    x = 17,989.82

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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.