Home / 20,846.08-28,760.40-11,887.12

Finding the Fourth Proportional to 20,846.08, 28,760.40 and 11,887.12

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Solution

The fourth proportional to 20,846.08, 28,760.40 and 11,887.12 is: 16,400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.08 : 28,760.40 = 11,887.12 : x
  2. Step 2: Convert to fraction form
    20,846.08/28,760.40 = 11,887.12/x
  3. Step 3: Cross multiply
    20,846.08x = 28,760.40 × 11,887.12
  4. Step 4: Simplify right side
    20,846.08x = 341,878,326.05
  5. Step 5: Solve for x
    x = 341,878,326.05/20,846.08
  6. Step 6: Final answer
    x = 16,400.13

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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.