Home / 10,073.80-15,110.70-7,121.35

Finding the Fourth Proportional to 10,073.80, 15,110.70 and 7,121.35

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Solution

The fourth proportional to 10,073.80, 15,110.70 and 7,121.35 is: 10,682.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,073.80 : 15,110.70 = 7,121.35 : x
  2. Step 2: Convert to fraction form
    10,073.80/15,110.70 = 7,121.35/x
  3. Step 3: Cross multiply
    10,073.80x = 15,110.70 × 7,121.35
  4. Step 4: Simplify right side
    10,073.80x = 107,608,583.45
  5. Step 5: Solve for x
    x = 107,608,583.45/10,073.80
  6. Step 6: Final answer
    x = 10,682.03

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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.