Home / 10,919.76-16,376.16-5,722.80

Finding the Fourth Proportional to 10,919.76, 16,376.16 and 5,722.80

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Solution

The fourth proportional to 10,919.76, 16,376.16 and 5,722.80 is: 8,582.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.76 : 16,376.16 = 5,722.80 : x
  2. Step 2: Convert to fraction form
    10,919.76/16,376.16 = 5,722.80/x
  3. Step 3: Cross multiply
    10,919.76x = 16,376.16 × 5,722.80
  4. Step 4: Simplify right side
    10,919.76x = 93,717,488.45
  5. Step 5: Solve for x
    x = 93,717,488.45/10,919.76
  6. Step 6: Final answer
    x = 8,582.38

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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.