Home / 20,020.77-30,031.91-5,980.99

Finding the Fourth Proportional to 20,020.77, 30,031.91 and 5,980.99

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Solution

The fourth proportional to 20,020.77, 30,031.91 and 5,980.99 is: 8,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.77 : 30,031.91 = 5,980.99 : x
  2. Step 2: Convert to fraction form
    20,020.77/30,031.91 = 5,980.99/x
  3. Step 3: Cross multiply
    20,020.77x = 30,031.91 × 5,980.99
  4. Step 4: Simplify right side
    20,020.77x = 179,620,560.79
  5. Step 5: Solve for x
    x = 179,620,560.79/20,020.77
  6. Step 6: Final answer
    x = 8,971.71

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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.