Home / 13,726.01-18,939.85-7,757.63

Finding the Fourth Proportional to 13,726.01, 18,939.85 and 7,757.63

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Solution

The fourth proportional to 13,726.01, 18,939.85 and 7,757.63 is: 10,704.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.01 : 18,939.85 = 7,757.63 : x
  2. Step 2: Convert to fraction form
    13,726.01/18,939.85 = 7,757.63/x
  3. Step 3: Cross multiply
    13,726.01x = 18,939.85 × 7,757.63
  4. Step 4: Simplify right side
    13,726.01x = 146,928,348.56
  5. Step 5: Solve for x
    x = 146,928,348.56/13,726.01
  6. Step 6: Final answer
    x = 10,704.37

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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.