Home / 20,694.91-28,559.10-11,263.57

Finding the Fourth Proportional to 20,694.91, 28,559.10 and 11,263.57

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Solution

The fourth proportional to 20,694.91, 28,559.10 and 11,263.57 is: 15,543.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.91 : 28,559.10 = 11,263.57 : x
  2. Step 2: Convert to fraction form
    20,694.91/28,559.10 = 11,263.57/x
  3. Step 3: Cross multiply
    20,694.91x = 28,559.10 × 11,263.57
  4. Step 4: Simplify right side
    20,694.91x = 321,677,421.99
  5. Step 5: Solve for x
    x = 321,677,421.99/20,694.91
  6. Step 6: Final answer
    x = 15,543.79

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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.