Home / 20,923.36-28,874.12-11,363.44

Finding the Fourth Proportional to 20,923.36, 28,874.12 and 11,363.44

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Solution

The fourth proportional to 20,923.36, 28,874.12 and 11,363.44 is: 15,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.36 : 28,874.12 = 11,363.44 : x
  2. Step 2: Convert to fraction form
    20,923.36/28,874.12 = 11,363.44/x
  3. Step 3: Cross multiply
    20,923.36x = 28,874.12 × 11,363.44
  4. Step 4: Simplify right side
    20,923.36x = 328,109,330.17
  5. Step 5: Solve for x
    x = 328,109,330.17/20,923.36
  6. Step 6: Final answer
    x = 15,681.48

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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.