Home / 11,878.19-17,816.91-5,642.69

Finding the Fourth Proportional to 11,878.19, 17,816.91 and 5,642.69

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Solution

The fourth proportional to 11,878.19, 17,816.91 and 5,642.69 is: 8,463.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.19 : 17,816.91 = 5,642.69 : x
  2. Step 2: Convert to fraction form
    11,878.19/17,816.91 = 5,642.69/x
  3. Step 3: Cross multiply
    11,878.19x = 17,816.91 × 5,642.69
  4. Step 4: Simplify right side
    11,878.19x = 100,535,210.80
  5. Step 5: Solve for x
    x = 100,535,210.80/11,878.19
  6. Step 6: Final answer
    x = 8,463.85

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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.