Home / 20,885.84-28,822.56-11,454.24

Finding the Fourth Proportional to 20,885.84, 28,822.56 and 11,454.24

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Solution

The fourth proportional to 20,885.84, 28,822.56 and 11,454.24 is: 15,806.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.84 : 28,822.56 = 11,454.24 : x
  2. Step 2: Convert to fraction form
    20,885.84/28,822.56 = 11,454.24/x
  3. Step 3: Cross multiply
    20,885.84x = 28,822.56 × 11,454.24
  4. Step 4: Simplify right side
    20,885.84x = 330,140,519.65
  5. Step 5: Solve for x
    x = 330,140,519.65/20,885.84
  6. Step 6: Final answer
    x = 15,806.91

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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.