Home / 20,349.18-28,095.66-13,644.81

Finding the Fourth Proportional to 20,349.18, 28,095.66 and 13,644.81

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Solution

The fourth proportional to 20,349.18, 28,095.66 and 13,644.81 is: 18,839.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.18 : 28,095.66 = 13,644.81 : x
  2. Step 2: Convert to fraction form
    20,349.18/28,095.66 = 13,644.81/x
  3. Step 3: Cross multiply
    20,349.18x = 28,095.66 × 13,644.81
  4. Step 4: Simplify right side
    20,349.18x = 383,359,942.52
  5. Step 5: Solve for x
    x = 383,359,942.52/20,349.18
  6. Step 6: Final answer
    x = 18,839.09

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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.