Home / 20,484.94-28,262.62-12,421.83

Finding the Fourth Proportional to 20,484.94, 28,262.62 and 12,421.83

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Solution

The fourth proportional to 20,484.94, 28,262.62 and 12,421.83 is: 17,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.94 : 28,262.62 = 12,421.83 : x
  2. Step 2: Convert to fraction form
    20,484.94/28,262.62 = 12,421.83/x
  3. Step 3: Cross multiply
    20,484.94x = 28,262.62 × 12,421.83
  4. Step 4: Simplify right side
    20,484.94x = 351,073,353.66
  5. Step 5: Solve for x
    x = 351,073,353.66/20,484.94
  6. Step 6: Final answer
    x = 17,138.12

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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.