Home / 12,167.90-18,244.87-4,763.69

Finding the Fourth Proportional to 12,167.90, 18,244.87 and 4,763.69

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Solution

The fourth proportional to 12,167.90, 18,244.87 and 4,763.69 is: 7,142.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.90 : 18,244.87 = 4,763.69 : x
  2. Step 2: Convert to fraction form
    12,167.90/18,244.87 = 4,763.69/x
  3. Step 3: Cross multiply
    12,167.90x = 18,244.87 × 4,763.69
  4. Step 4: Simplify right side
    12,167.90x = 86,912,938.47
  5. Step 5: Solve for x
    x = 86,912,938.47/12,167.90
  6. Step 6: Final answer
    x = 7,142.80

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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.