Home / 20,143.92-30,215.64-14,196.24

Finding the Fourth Proportional to 20,143.92, 30,215.64 and 14,196.24

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Solution

The fourth proportional to 20,143.92, 30,215.64 and 14,196.24 is: 21,294.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.92 : 30,215.64 = 14,196.24 : x
  2. Step 2: Convert to fraction form
    20,143.92/30,215.64 = 14,196.24/x
  3. Step 3: Cross multiply
    20,143.92x = 30,215.64 × 14,196.24
  4. Step 4: Simplify right side
    20,143.92x = 428,948,477.19
  5. Step 5: Solve for x
    x = 428,948,477.19/20,143.92
  6. Step 6: Final answer
    x = 21,294.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.