Home / 12,020.87-18,031.31-5,776.99

Finding the Fourth Proportional to 12,020.87, 18,031.31 and 5,776.99

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Solution

The fourth proportional to 12,020.87, 18,031.31 and 5,776.99 is: 8,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.87 : 18,031.31 = 5,776.99 : x
  2. Step 2: Convert to fraction form
    12,020.87/18,031.31 = 5,776.99/x
  3. Step 3: Cross multiply
    12,020.87x = 18,031.31 × 5,776.99
  4. Step 4: Simplify right side
    12,020.87x = 104,166,645.26
  5. Step 5: Solve for x
    x = 104,166,645.26/12,020.87
  6. Step 6: Final answer
    x = 8,665.48

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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.