Home / 15,311.92-21,128.82-8,598.28

Finding the Fourth Proportional to 15,311.92, 21,128.82 and 8,598.28

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Solution

The fourth proportional to 15,311.92, 21,128.82 and 8,598.28 is: 11,864.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.92 : 21,128.82 = 8,598.28 : x
  2. Step 2: Convert to fraction form
    15,311.92/21,128.82 = 8,598.28/x
  3. Step 3: Cross multiply
    15,311.92x = 21,128.82 × 8,598.28
  4. Step 4: Simplify right side
    15,311.92x = 181,671,467.44
  5. Step 5: Solve for x
    x = 181,671,467.44/15,311.92
  6. Step 6: Final answer
    x = 11,864.71

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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.