Home / 11,315.91-15,616.09-6,280.62

Finding the Fourth Proportional to 11,315.91, 15,616.09 and 6,280.62

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Solution

The fourth proportional to 11,315.91, 15,616.09 and 6,280.62 is: 8,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.91 : 15,616.09 = 6,280.62 : x
  2. Step 2: Convert to fraction form
    11,315.91/15,616.09 = 6,280.62/x
  3. Step 3: Cross multiply
    11,315.91x = 15,616.09 × 6,280.62
  4. Step 4: Simplify right side
    11,315.91x = 98,078,711.47
  5. Step 5: Solve for x
    x = 98,078,711.47/11,315.91
  6. Step 6: Final answer
    x = 8,667.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.