Home / 15,186.11-20,953.45-8,813.77

Finding the Fourth Proportional to 15,186.11, 20,953.45 and 8,813.77

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Solution

The fourth proportional to 15,186.11, 20,953.45 and 8,813.77 is: 12,161.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.11 : 20,953.45 = 8,813.77 : x
  2. Step 2: Convert to fraction form
    15,186.11/20,953.45 = 8,813.77/x
  3. Step 3: Cross multiply
    15,186.11x = 20,953.45 × 8,813.77
  4. Step 4: Simplify right side
    15,186.11x = 184,678,844.94
  5. Step 5: Solve for x
    x = 184,678,844.94/15,186.11
  6. Step 6: Final answer
    x = 12,161.04

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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.