Home / 11,398.86-15,721.97-8,566.36

Finding the Fourth Proportional to 11,398.86, 15,721.97 and 8,566.36

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Solution

The fourth proportional to 11,398.86, 15,721.97 and 8,566.36 is: 11,815.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.86 : 15,721.97 = 8,566.36 : x
  2. Step 2: Convert to fraction form
    11,398.86/15,721.97 = 8,566.36/x
  3. Step 3: Cross multiply
    11,398.86x = 15,721.97 × 8,566.36
  4. Step 4: Simplify right side
    11,398.86x = 134,679,972.79
  5. Step 5: Solve for x
    x = 134,679,972.79/11,398.86
  6. Step 6: Final answer
    x = 11,815.21

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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.