Home / 13,857.76-19,122.06-8,751.34

Finding the Fourth Proportional to 13,857.76, 19,122.06 and 8,751.34

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Solution

The fourth proportional to 13,857.76, 19,122.06 and 8,751.34 is: 12,075.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.76 : 19,122.06 = 8,751.34 : x
  2. Step 2: Convert to fraction form
    13,857.76/19,122.06 = 8,751.34/x
  3. Step 3: Cross multiply
    13,857.76x = 19,122.06 × 8,751.34
  4. Step 4: Simplify right side
    13,857.76x = 167,343,648.56
  5. Step 5: Solve for x
    x = 167,343,648.56/13,857.76
  6. Step 6: Final answer
    x = 12,075.81

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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.