Home / 15,218.08-20,999.92-8,411.84

Finding the Fourth Proportional to 15,218.08, 20,999.92 and 8,411.84

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Solution

The fourth proportional to 15,218.08, 20,999.92 and 8,411.84 is: 11,607.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.08 : 20,999.92 = 8,411.84 : x
  2. Step 2: Convert to fraction form
    15,218.08/20,999.92 = 8,411.84/x
  3. Step 3: Cross multiply
    15,218.08x = 20,999.92 × 8,411.84
  4. Step 4: Simplify right side
    15,218.08x = 176,647,967.05
  5. Step 5: Solve for x
    x = 176,647,967.05/15,218.08
  6. Step 6: Final answer
    x = 11,607.77

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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.