Home / 20,659.93-28,511.40-11,228.70

Finding the Fourth Proportional to 20,659.93, 28,511.40 and 11,228.70

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Solution

The fourth proportional to 20,659.93, 28,511.40 and 11,228.70 is: 15,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.93 : 28,511.40 = 11,228.70 : x
  2. Step 2: Convert to fraction form
    20,659.93/28,511.40 = 11,228.70/x
  3. Step 3: Cross multiply
    20,659.93x = 28,511.40 × 11,228.70
  4. Step 4: Simplify right side
    20,659.93x = 320,145,957.18
  5. Step 5: Solve for x
    x = 320,145,957.18/20,659.93
  6. Step 6: Final answer
    x = 15,495.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.