Home / 14,141.90-21,212.85-9,986.60

Finding the Fourth Proportional to 14,141.90, 21,212.85 and 9,986.60

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Solution

The fourth proportional to 14,141.90, 21,212.85 and 9,986.60 is: 14,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,141.90 : 21,212.85 = 9,986.60 : x
  2. Step 2: Convert to fraction form
    14,141.90/21,212.85 = 9,986.60/x
  3. Step 3: Cross multiply
    14,141.90x = 21,212.85 × 9,986.60
  4. Step 4: Simplify right side
    14,141.90x = 211,844,247.81
  5. Step 5: Solve for x
    x = 211,844,247.81/14,141.90
  6. Step 6: Final answer
    x = 14,979.90

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Similar ratio
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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.