Home / 13,849.38-19,106.70-7,880.22

Finding the Fourth Proportional to 13,849.38, 19,106.70 and 7,880.22

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Solution

The fourth proportional to 13,849.38, 19,106.70 and 7,880.22 is: 10,871.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,849.38 : 19,106.70 = 7,880.22 : x
  2. Step 2: Convert to fraction form
    13,849.38/19,106.70 = 7,880.22/x
  3. Step 3: Cross multiply
    13,849.38x = 19,106.70 × 7,880.22
  4. Step 4: Simplify right side
    13,849.38x = 150,564,999.47
  5. Step 5: Solve for x
    x = 150,564,999.47/13,849.38
  6. Step 6: Final answer
    x = 10,871.61

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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.