Home / 25,186.81-34,758.61-13,857.12

Finding the Fourth Proportional to 25,186.81, 34,758.61 and 13,857.12

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Solution

The fourth proportional to 25,186.81, 34,758.61 and 13,857.12 is: 19,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,186.81 : 34,758.61 = 13,857.12 : x
  2. Step 2: Convert to fraction form
    25,186.81/34,758.61 = 13,857.12/x
  3. Step 3: Cross multiply
    25,186.81x = 34,758.61 × 13,857.12
  4. Step 4: Simplify right side
    25,186.81x = 481,654,261.21
  5. Step 5: Solve for x
    x = 481,654,261.21/25,186.81
  6. Step 6: Final answer
    x = 19,123.28

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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.