Home / 11,320.91-15,618.57-8,343.86

Finding the Fourth Proportional to 11,320.91, 15,618.57 and 8,343.86

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Solution

The fourth proportional to 11,320.91, 15,618.57 and 8,343.86 is: 11,511.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.91 : 15,618.57 = 8,343.86 : x
  2. Step 2: Convert to fraction form
    11,320.91/15,618.57 = 8,343.86/x
  3. Step 3: Cross multiply
    11,320.91x = 15,618.57 × 8,343.86
  4. Step 4: Simplify right side
    11,320.91x = 130,319,161.48
  5. Step 5: Solve for x
    x = 130,319,161.48/11,320.91
  6. Step 6: Final answer
    x = 11,511.37

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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.