Home / 14,207.10-21,310.65-7,986.30

Finding the Fourth Proportional to 14,207.10, 21,310.65 and 7,986.30

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Solution

The fourth proportional to 14,207.10, 21,310.65 and 7,986.30 is: 11,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,207.10 : 21,310.65 = 7,986.30 : x
  2. Step 2: Convert to fraction form
    14,207.10/21,310.65 = 7,986.30/x
  3. Step 3: Cross multiply
    14,207.10x = 21,310.65 × 7,986.30
  4. Step 4: Simplify right side
    14,207.10x = 170,193,244.10
  5. Step 5: Solve for x
    x = 170,193,244.10/14,207.10
  6. Step 6: Final answer
    x = 11,979.45

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Double scale
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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.