Home / 13,723.25-18,938.91-7,754.78

Finding the Fourth Proportional to 13,723.25, 18,938.91 and 7,754.78

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Solution

The fourth proportional to 13,723.25, 18,938.91 and 7,754.78 is: 10,702.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.25 : 18,938.91 = 7,754.78 : x
  2. Step 2: Convert to fraction form
    13,723.25/18,938.91 = 7,754.78/x
  3. Step 3: Cross multiply
    13,723.25x = 18,938.91 × 7,754.78
  4. Step 4: Simplify right side
    13,723.25x = 146,867,080.49
  5. Step 5: Solve for x
    x = 146,867,080.49/13,723.25
  6. Step 6: Final answer
    x = 10,702.06

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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.