Home / 18,973.40-26,200.15-11,815.61

Finding the Fourth Proportional to 18,973.40, 26,200.15 and 11,815.61

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Solution

The fourth proportional to 18,973.40, 26,200.15 and 11,815.61 is: 16,316.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.40 : 26,200.15 = 11,815.61 : x
  2. Step 2: Convert to fraction form
    18,973.40/26,200.15 = 11,815.61/x
  3. Step 3: Cross multiply
    18,973.40x = 26,200.15 × 11,815.61
  4. Step 4: Simplify right side
    18,973.40x = 309,570,687.72
  5. Step 5: Solve for x
    x = 309,570,687.72/18,973.40
  6. Step 6: Final answer
    x = 16,316.03

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Why These Related Problems?

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