Home / 20,320.11-28,043.82-12,362.94

Finding the Fourth Proportional to 20,320.11, 28,043.82 and 12,362.94

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Solution

The fourth proportional to 20,320.11, 28,043.82 and 12,362.94 is: 17,062.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.11 : 28,043.82 = 12,362.94 : x
  2. Step 2: Convert to fraction form
    20,320.11/28,043.82 = 12,362.94/x
  3. Step 3: Cross multiply
    20,320.11x = 28,043.82 × 12,362.94
  4. Step 4: Simplify right side
    20,320.11x = 346,704,064.03
  5. Step 5: Solve for x
    x = 346,704,064.03/20,320.11
  6. Step 6: Final answer
    x = 17,062.12

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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.