Home / 13,156.82-18,158.44-8,055.34

Finding the Fourth Proportional to 13,156.82, 18,158.44 and 8,055.34

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Solution

The fourth proportional to 13,156.82, 18,158.44 and 8,055.34 is: 11,117.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.82 : 18,158.44 = 8,055.34 : x
  2. Step 2: Convert to fraction form
    13,156.82/18,158.44 = 8,055.34/x
  3. Step 3: Cross multiply
    13,156.82x = 18,158.44 × 8,055.34
  4. Step 4: Simplify right side
    13,156.82x = 146,272,408.07
  5. Step 5: Solve for x
    x = 146,272,408.07/13,156.82
  6. Step 6: Final answer
    x = 11,117.61

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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.