Home / 20,432.88-28,202.76-12,054.96

Finding the Fourth Proportional to 20,432.88, 28,202.76 and 12,054.96

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Solution

The fourth proportional to 20,432.88, 28,202.76 and 12,054.96 is: 16,639.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.88 : 28,202.76 = 12,054.96 : x
  2. Step 2: Convert to fraction form
    20,432.88/28,202.76 = 12,054.96/x
  3. Step 3: Cross multiply
    20,432.88x = 28,202.76 × 12,054.96
  4. Step 4: Simplify right side
    20,432.88x = 339,983,143.69
  5. Step 5: Solve for x
    x = 339,983,143.69/20,432.88
  6. Step 6: Final answer
    x = 16,639.02

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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.