Home / 10,969.60-16,442.88-7,889.92

Finding the Fourth Proportional to 10,969.60, 16,442.88 and 7,889.92

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Solution

The fourth proportional to 10,969.60, 16,442.88 and 7,889.92 is: 11,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.60 : 16,442.88 = 7,889.92 : x
  2. Step 2: Convert to fraction form
    10,969.60/16,442.88 = 7,889.92/x
  3. Step 3: Cross multiply
    10,969.60x = 16,442.88 × 7,889.92
  4. Step 4: Simplify right side
    10,969.60x = 129,733,007.77
  5. Step 5: Solve for x
    x = 129,733,007.77/10,969.60
  6. Step 6: Final answer
    x = 11,826.59

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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.