Home / 20,031.69-30,199.64-18,960.06

Finding the Fourth Proportional to 20,031.69, 30,199.64 and 18,960.06

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Solution

The fourth proportional to 20,031.69, 30,199.64 and 18,960.06 is: 28,584.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.69 : 30,199.64 = 18,960.06 : x
  2. Step 2: Convert to fraction form
    20,031.69/30,199.64 = 18,960.06/x
  3. Step 3: Cross multiply
    20,031.69x = 30,199.64 × 18,960.06
  4. Step 4: Simplify right side
    20,031.69x = 572,587,033.78
  5. Step 5: Solve for x
    x = 572,587,033.78/20,031.69
  6. Step 6: Final answer
    x = 28,584.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.