Home / 10,109.80-15,161.34-4,912.36

Finding the Fourth Proportional to 10,109.80, 15,161.34 and 4,912.36

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Solution

The fourth proportional to 10,109.80, 15,161.34 and 4,912.36 is: 7,366.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.80 : 15,161.34 = 4,912.36 : x
  2. Step 2: Convert to fraction form
    10,109.80/15,161.34 = 4,912.36/x
  3. Step 3: Cross multiply
    10,109.80x = 15,161.34 × 4,912.36
  4. Step 4: Simplify right side
    10,109.80x = 74,477,960.16
  5. Step 5: Solve for x
    x = 74,477,960.16/10,109.80
  6. Step 6: Final answer
    x = 7,366.91

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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.