Home / 15,665.86-21,612.94-10,000.82

Finding the Fourth Proportional to 15,665.86, 21,612.94 and 10,000.82

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Solution

The fourth proportional to 15,665.86, 21,612.94 and 10,000.82 is: 13,797.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.86 : 21,612.94 = 10,000.82 : x
  2. Step 2: Convert to fraction form
    15,665.86/21,612.94 = 10,000.82/x
  3. Step 3: Cross multiply
    15,665.86x = 21,612.94 × 10,000.82
  4. Step 4: Simplify right side
    15,665.86x = 216,147,122.61
  5. Step 5: Solve for x
    x = 216,147,122.61/15,665.86
  6. Step 6: Final answer
    x = 13,797.34

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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.