Home / 11,123.41-16,689.75-4,880.20

Finding the Fourth Proportional to 11,123.41, 16,689.75 and 4,880.20

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Solution

The fourth proportional to 11,123.41, 16,689.75 and 4,880.20 is: 7,322.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.41 : 16,689.75 = 4,880.20 : x
  2. Step 2: Convert to fraction form
    11,123.41/16,689.75 = 4,880.20/x
  3. Step 3: Cross multiply
    11,123.41x = 16,689.75 × 4,880.20
  4. Step 4: Simplify right side
    11,123.41x = 81,449,317.95
  5. Step 5: Solve for x
    x = 81,449,317.95/11,123.41
  6. Step 6: Final answer
    x = 7,322.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.