Home / 20,919.14-28,849.12-14,214.77

Finding the Fourth Proportional to 20,919.14, 28,849.12 and 14,214.77

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Solution

The fourth proportional to 20,919.14, 28,849.12 and 14,214.77 is: 19,603.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919.14 : 28,849.12 = 14,214.77 : x
  2. Step 2: Convert to fraction form
    20,919.14/28,849.12 = 14,214.77/x
  3. Step 3: Cross multiply
    20,919.14x = 28,849.12 × 14,214.77
  4. Step 4: Simplify right side
    20,919.14x = 410,083,605.50
  5. Step 5: Solve for x
    x = 410,083,605.50/20,919.14
  6. Step 6: Final answer
    x = 19,603.27

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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.