Home / 10,186.19-15,255.59-9,905.90

Finding the Fourth Proportional to 10,186.19, 15,255.59 and 9,905.90

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Solution

The fourth proportional to 10,186.19, 15,255.59 and 9,905.90 is: 14,835.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.19 : 15,255.59 = 9,905.90 : x
  2. Step 2: Convert to fraction form
    10,186.19/15,255.59 = 9,905.90/x
  3. Step 3: Cross multiply
    10,186.19x = 15,255.59 × 9,905.90
  4. Step 4: Simplify right side
    10,186.19x = 151,120,337.59
  5. Step 5: Solve for x
    x = 151,120,337.59/10,186.19
  6. Step 6: Final answer
    x = 14,835.81

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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.