Home / 20,568,862.74-28,384,416.13-11,276,115.21

Finding the Fourth Proportional to 20,568,862.74, 28,384,416.13 and 11,276,115.21

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Solution

The fourth proportional to 20,568,862.74, 28,384,416.13 and 11,276,115.21 is: 15,560,702.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568,862.74 : 28,384,416.13 = 11,276,115.21 : x
  2. Step 2: Convert to fraction form
    20,568,862.74/28,384,416.13 = 11,276,115.21/x
  3. Step 3: Cross multiply
    20,568,862.74x = 28,384,416.13 × 11,276,115.21
  4. Step 4: Simplify right side
    20,568,862.74x = 320,065,946,450,462.38
  5. Step 5: Solve for x
    x = 320,065,946,450,462.38/20,568,862.74
  6. Step 6: Final answer
    x = 15,560,702.14

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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.