Home / 20,934.42-28,897.10-13,863.12

Finding the Fourth Proportional to 20,934.42, 28,897.10 and 13,863.12

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Solution

The fourth proportional to 20,934.42, 28,897.10 and 13,863.12 is: 19,136.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.42 : 28,897.10 = 13,863.12 : x
  2. Step 2: Convert to fraction form
    20,934.42/28,897.10 = 13,863.12/x
  3. Step 3: Cross multiply
    20,934.42x = 28,897.10 × 13,863.12
  4. Step 4: Simplify right side
    20,934.42x = 400,603,895.64
  5. Step 5: Solve for x
    x = 400,603,895.64/20,934.42
  6. Step 6: Final answer
    x = 19,136.14

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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.