Home / 13,857.75-19,123.80-7,570.14

Finding the Fourth Proportional to 13,857.75, 19,123.80 and 7,570.14

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Solution

The fourth proportional to 13,857.75, 19,123.80 and 7,570.14 is: 10,446.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.75 : 19,123.80 = 7,570.14 : x
  2. Step 2: Convert to fraction form
    13,857.75/19,123.80 = 7,570.14/x
  3. Step 3: Cross multiply
    13,857.75x = 19,123.80 × 7,570.14
  4. Step 4: Simplify right side
    13,857.75x = 144,769,843.33
  5. Step 5: Solve for x
    x = 144,769,843.33/13,857.75
  6. Step 6: Final answer
    x = 10,446.85

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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.