Home / 10,954.80-16,427.40-4,378.80

Finding the Fourth Proportional to 10,954.80, 16,427.40 and 4,378.80

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Solution

The fourth proportional to 10,954.80, 16,427.40 and 4,378.80 is: 6,566.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,954.80 : 16,427.40 = 4,378.80 : x
  2. Step 2: Convert to fraction form
    10,954.80/16,427.40 = 4,378.80/x
  3. Step 3: Cross multiply
    10,954.80x = 16,427.40 × 4,378.80
  4. Step 4: Simplify right side
    10,954.80x = 71,932,299.12
  5. Step 5: Solve for x
    x = 71,932,299.12/10,954.80
  6. Step 6: Final answer
    x = 6,566.28

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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.