Home / 19,165.18-28,742.52-12,134.60

Finding the Fourth Proportional to 19,165.18, 28,742.52 and 12,134.60

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Solution

The fourth proportional to 19,165.18, 28,742.52 and 12,134.60 is: 18,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.18 : 28,742.52 = 12,134.60 : x
  2. Step 2: Convert to fraction form
    19,165.18/28,742.52 = 12,134.60/x
  3. Step 3: Cross multiply
    19,165.18x = 28,742.52 × 12,134.60
  4. Step 4: Simplify right side
    19,165.18x = 348,778,983.19
  5. Step 5: Solve for x
    x = 348,778,983.19/19,165.18
  6. Step 6: Final answer
    x = 18,198.58

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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.