Home / 15,126.82-20,853.37-10,089.20

Finding the Fourth Proportional to 15,126.82, 20,853.37 and 10,089.20

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Solution

The fourth proportional to 15,126.82, 20,853.37 and 10,089.20 is: 13,908.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.82 : 20,853.37 = 10,089.20 : x
  2. Step 2: Convert to fraction form
    15,126.82/20,853.37 = 10,089.20/x
  3. Step 3: Cross multiply
    15,126.82x = 20,853.37 × 10,089.20
  4. Step 4: Simplify right side
    15,126.82x = 210,393,769.31
  5. Step 5: Solve for x
    x = 210,393,769.31/15,126.82
  6. Step 6: Final answer
    x = 13,908.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.