Home / 13,986.39-20,979.59-9,590.52

Finding the Fourth Proportional to 13,986.39, 20,979.59 and 9,590.52

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Solution

The fourth proportional to 13,986.39, 20,979.59 and 9,590.52 is: 14,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.39 : 20,979.59 = 9,590.52 : x
  2. Step 2: Convert to fraction form
    13,986.39/20,979.59 = 9,590.52/x
  3. Step 3: Cross multiply
    13,986.39x = 20,979.59 × 9,590.52
  4. Step 4: Simplify right side
    13,986.39x = 201,205,177.49
  5. Step 5: Solve for x
    x = 201,205,177.49/13,986.39
  6. Step 6: Final answer
    x = 14,385.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.