Home / 13,726.72-18,935.04-8,135.68

Finding the Fourth Proportional to 13,726.72, 18,935.04 and 8,135.68

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Solution

The fourth proportional to 13,726.72, 18,935.04 and 8,135.68 is: 11,222.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.72 : 18,935.04 = 8,135.68 : x
  2. Step 2: Convert to fraction form
    13,726.72/18,935.04 = 8,135.68/x
  3. Step 3: Cross multiply
    13,726.72x = 18,935.04 × 8,135.68
  4. Step 4: Simplify right side
    13,726.72x = 154,049,426.23
  5. Step 5: Solve for x
    x = 154,049,426.23/13,726.72
  6. Step 6: Final answer
    x = 11,222.60

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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.