Home / 20,953.11-28,891.62-15,277.85

Finding the Fourth Proportional to 20,953.11, 28,891.62 and 15,277.85

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Solution

The fourth proportional to 20,953.11, 28,891.62 and 15,277.85 is: 21,066.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.11 : 28,891.62 = 15,277.85 : x
  2. Step 2: Convert to fraction form
    20,953.11/28,891.62 = 15,277.85/x
  3. Step 3: Cross multiply
    20,953.11x = 28,891.62 × 15,277.85
  4. Step 4: Simplify right side
    20,953.11x = 441,401,692.16
  5. Step 5: Solve for x
    x = 441,401,692.16/20,953.11
  6. Step 6: Final answer
    x = 21,066.17

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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.