Home / 13,726.96-18,943.28-7,439.32

Finding the Fourth Proportional to 13,726.96, 18,943.28 and 7,439.32

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Solution

The fourth proportional to 13,726.96, 18,943.28 and 7,439.32 is: 10,266.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.96 : 18,943.28 = 7,439.32 : x
  2. Step 2: Convert to fraction form
    13,726.96/18,943.28 = 7,439.32/x
  3. Step 3: Cross multiply
    13,726.96x = 18,943.28 × 7,439.32
  4. Step 4: Simplify right side
    13,726.96x = 140,925,121.77
  5. Step 5: Solve for x
    x = 140,925,121.77/13,726.96
  6. Step 6: Final answer
    x = 10,266.30

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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.