Home / 20,341.87-28,052.06-15,863.99

Finding the Fourth Proportional to 20,341.87, 28,052.06 and 15,863.99

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Solution

The fourth proportional to 20,341.87, 28,052.06 and 15,863.99 is: 21,876.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,341.87 : 28,052.06 = 15,863.99 : x
  2. Step 2: Convert to fraction form
    20,341.87/28,052.06 = 15,863.99/x
  3. Step 3: Cross multiply
    20,341.87x = 28,052.06 × 15,863.99
  4. Step 4: Simplify right side
    20,341.87x = 445,017,379.74
  5. Step 5: Solve for x
    x = 445,017,379.74/20,341.87
  6. Step 6: Final answer
    x = 21,876.92

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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.