Home / 20,431.92-28,192.64-12,050.08

Finding the Fourth Proportional to 20,431.92, 28,192.64 and 12,050.08

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Solution

The fourth proportional to 20,431.92, 28,192.64 and 12,050.08 is: 16,627.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.92 : 28,192.64 = 12,050.08 : x
  2. Step 2: Convert to fraction form
    20,431.92/28,192.64 = 12,050.08/x
  3. Step 3: Cross multiply
    20,431.92x = 28,192.64 × 12,050.08
  4. Step 4: Simplify right side
    20,431.92x = 339,723,567.41
  5. Step 5: Solve for x
    x = 339,723,567.41/20,431.92
  6. Step 6: Final answer
    x = 16,627.10

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1.5x scale

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.