Home / 10,891.28-16,336.92-4,653.20

Finding the Fourth Proportional to 10,891.28, 16,336.92 and 4,653.20

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Solution

The fourth proportional to 10,891.28, 16,336.92 and 4,653.20 is: 6,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.28 : 16,336.92 = 4,653.20 : x
  2. Step 2: Convert to fraction form
    10,891.28/16,336.92 = 4,653.20/x
  3. Step 3: Cross multiply
    10,891.28x = 16,336.92 × 4,653.20
  4. Step 4: Simplify right side
    10,891.28x = 76,018,956.14
  5. Step 5: Solve for x
    x = 76,018,956.14/10,891.28
  6. Step 6: Final answer
    x = 6,979.80

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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.