Home / 10,919.12-16,366.90-5,284.89

Finding the Fourth Proportional to 10,919.12, 16,366.90 and 5,284.89

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Solution

The fourth proportional to 10,919.12, 16,366.90 and 5,284.89 is: 7,921.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.12 : 16,366.90 = 5,284.89 : x
  2. Step 2: Convert to fraction form
    10,919.12/16,366.90 = 5,284.89/x
  3. Step 3: Cross multiply
    10,919.12x = 16,366.90 × 5,284.89
  4. Step 4: Simplify right side
    10,919.12x = 86,497,266.14
  5. Step 5: Solve for x
    x = 86,497,266.14/10,919.12
  6. Step 6: Final answer
    x = 7,921.63

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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.