Home / 20,430.92-28,191.26-12,049.08

Finding the Fourth Proportional to 20,430.92, 28,191.26 and 12,049.08

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Solution

The fourth proportional to 20,430.92, 28,191.26 and 12,049.08 is: 16,625.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.92 : 28,191.26 = 12,049.08 : x
  2. Step 2: Convert to fraction form
    20,430.92/28,191.26 = 12,049.08/x
  3. Step 3: Cross multiply
    20,430.92x = 28,191.26 × 12,049.08
  4. Step 4: Simplify right side
    20,430.92x = 339,678,747.04
  5. Step 5: Solve for x
    x = 339,678,747.04/20,430.92
  6. Step 6: Final answer
    x = 16,625.72

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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.