Home / 20,888.52-28,824.66-11,455.56

Finding the Fourth Proportional to 20,888.52, 28,824.66 and 11,455.56

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Solution

The fourth proportional to 20,888.52, 28,824.66 and 11,455.56 is: 15,807.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.52 : 28,824.66 = 11,455.56 : x
  2. Step 2: Convert to fraction form
    20,888.52/28,824.66 = 11,455.56/x
  3. Step 3: Cross multiply
    20,888.52x = 28,824.66 × 11,455.56
  4. Step 4: Simplify right side
    20,888.52x = 330,202,622.11
  5. Step 5: Solve for x
    x = 330,202,622.11/20,888.52
  6. Step 6: Final answer
    x = 15,807.85

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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.