Home / 20,867.72-28,797.57-11,307.76

Finding the Fourth Proportional to 20,867.72, 28,797.57 and 11,307.76

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Solution

The fourth proportional to 20,867.72, 28,797.57 and 11,307.76 is: 15,604.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.72 : 28,797.57 = 11,307.76 : x
  2. Step 2: Convert to fraction form
    20,867.72/28,797.57 = 11,307.76/x
  3. Step 3: Cross multiply
    20,867.72x = 28,797.57 × 11,307.76
  4. Step 4: Simplify right side
    20,867.72x = 325,635,866.16
  5. Step 5: Solve for x
    x = 325,635,866.16/20,867.72
  6. Step 6: Final answer
    x = 15,604.76

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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.