Home / 20,854.08-28,771.44-11,895.12

Finding the Fourth Proportional to 20,854.08, 28,771.44 and 11,895.12

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Solution

The fourth proportional to 20,854.08, 28,771.44 and 11,895.12 is: 16,411.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.08 : 28,771.44 = 11,895.12 : x
  2. Step 2: Convert to fraction form
    20,854.08/28,771.44 = 11,895.12/x
  3. Step 3: Cross multiply
    20,854.08x = 28,771.44 × 11,895.12
  4. Step 4: Simplify right side
    20,854.08x = 342,239,731.37
  5. Step 5: Solve for x
    x = 342,239,731.37/20,854.08
  6. Step 6: Final answer
    x = 16,411.16

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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.