Home / 20,042.49-30,055.05-9,515.55

Finding the Fourth Proportional to 20,042.49, 30,055.05 and 9,515.55

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Solution

The fourth proportional to 20,042.49, 30,055.05 and 9,515.55 is: 14,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,042.49 : 30,055.05 = 9,515.55 : x
  2. Step 2: Convert to fraction form
    20,042.49/30,055.05 = 9,515.55/x
  3. Step 3: Cross multiply
    20,042.49x = 30,055.05 × 9,515.55
  4. Step 4: Simplify right side
    20,042.49x = 285,990,331.03
  5. Step 5: Solve for x
    x = 285,990,331.03/20,042.49
  6. Step 6: Final answer
    x = 14,269.20

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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.