Home / 20,521-28,318.98-14,936.68

Finding the Fourth Proportional to 20,521, 28,318.98 and 14,936.68

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Solution

The fourth proportional to 20,521, 28,318.98 and 14,936.68 is: 20,612.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521 : 28,318.98 = 14,936.68 : x
  2. Step 2: Convert to fraction form
    20,521/28,318.98 = 14,936.68/x
  3. Step 3: Cross multiply
    20,521x = 28,318.98 × 14,936.68
  4. Step 4: Simplify right side
    20,521x = 422,991,542.19
  5. Step 5: Solve for x
    x = 422,991,542.19/20,521
  6. Step 6: Final answer
    x = 20,612.62

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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.