Home / 19,975.80-29,982.90-10,126.20

Finding the Fourth Proportional to 19,975.80, 29,982.90 and 10,126.20

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Solution

The fourth proportional to 19,975.80, 29,982.90 and 10,126.20 is: 15,199.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,975.80 : 29,982.90 = 10,126.20 : x
  2. Step 2: Convert to fraction form
    19,975.80/29,982.90 = 10,126.20/x
  3. Step 3: Cross multiply
    19,975.80x = 29,982.90 × 10,126.20
  4. Step 4: Simplify right side
    19,975.80x = 303,612,841.98
  5. Step 5: Solve for x
    x = 303,612,841.98/19,975.80
  6. Step 6: Final answer
    x = 15,199.03

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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.