Home / 13,726.87-18,943.10-7,439.24

Finding the Fourth Proportional to 13,726.87, 18,943.10 and 7,439.24

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Solution

The fourth proportional to 13,726.87, 18,943.10 and 7,439.24 is: 10,266.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.87 : 18,943.10 = 7,439.24 : x
  2. Step 2: Convert to fraction form
    13,726.87/18,943.10 = 7,439.24/x
  3. Step 3: Cross multiply
    13,726.87x = 18,943.10 × 7,439.24
  4. Step 4: Simplify right side
    13,726.87x = 140,922,305.30
  5. Step 5: Solve for x
    x = 140,922,305.30/13,726.87
  6. Step 6: Final answer
    x = 10,266.17

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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.