Home / 13,726.77-18,942.90-7,439.16

Finding the Fourth Proportional to 13,726.77, 18,942.90 and 7,439.16

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Solution

The fourth proportional to 13,726.77, 18,942.90 and 7,439.16 is: 10,266.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.77 : 18,942.90 = 7,439.16 : x
  2. Step 2: Convert to fraction form
    13,726.77/18,942.90 = 7,439.16/x
  3. Step 3: Cross multiply
    13,726.77x = 18,942.90 × 7,439.16
  4. Step 4: Simplify right side
    13,726.77x = 140,919,263.96
  5. Step 5: Solve for x
    x = 140,919,263.96/13,726.77
  6. Step 6: Final answer
    x = 10,266.02

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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.