Home / 20,321.62-28,048.19-12,366.41

Finding the Fourth Proportional to 20,321.62, 28,048.19 and 12,366.41

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Solution

The fourth proportional to 20,321.62, 28,048.19 and 12,366.41 is: 17,068.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.62 : 28,048.19 = 12,366.41 : x
  2. Step 2: Convert to fraction form
    20,321.62/28,048.19 = 12,366.41/x
  3. Step 3: Cross multiply
    20,321.62x = 28,048.19 × 12,366.41
  4. Step 4: Simplify right side
    20,321.62x = 346,855,215.22
  5. Step 5: Solve for x
    x = 346,855,215.22/20,321.62
  6. Step 6: Final answer
    x = 17,068.29

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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.