Home / 20,840.04-28,758.92-11,887.52

Finding the Fourth Proportional to 20,840.04, 28,758.92 and 11,887.52

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Solution

The fourth proportional to 20,840.04, 28,758.92 and 11,887.52 is: 16,404.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.04 : 28,758.92 = 11,887.52 : x
  2. Step 2: Convert to fraction form
    20,840.04/28,758.92 = 11,887.52/x
  3. Step 3: Cross multiply
    20,840.04x = 28,758.92 × 11,887.52
  4. Step 4: Simplify right side
    20,840.04x = 341,872,033.45
  5. Step 5: Solve for x
    x = 341,872,033.45/20,840.04
  6. Step 6: Final answer
    x = 16,404.58

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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.