Home / 13,530.60-20,339.64-12,150.36

Finding the Fourth Proportional to 13,530.60, 20,339.64 and 12,150.36

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Solution

The fourth proportional to 13,530.60, 20,339.64 and 12,150.36 is: 18,264.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.60 : 20,339.64 = 12,150.36 : x
  2. Step 2: Convert to fraction form
    13,530.60/20,339.64 = 12,150.36/x
  3. Step 3: Cross multiply
    13,530.60x = 20,339.64 × 12,150.36
  4. Step 4: Simplify right side
    13,530.60x = 247,133,948.27
  5. Step 5: Solve for x
    x = 247,133,948.27/13,530.60
  6. Step 6: Final answer
    x = 18,264.82

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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.