Home / 13,161.17-18,162.72-7,192.70

Finding the Fourth Proportional to 13,161.17, 18,162.72 and 7,192.70

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Solution

The fourth proportional to 13,161.17, 18,162.72 and 7,192.70 is: 9,926.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.17 : 18,162.72 = 7,192.70 : x
  2. Step 2: Convert to fraction form
    13,161.17/18,162.72 = 7,192.70/x
  3. Step 3: Cross multiply
    13,161.17x = 18,162.72 × 7,192.70
  4. Step 4: Simplify right side
    13,161.17x = 130,638,905.33
  5. Step 5: Solve for x
    x = 130,638,905.33/13,161.17
  6. Step 6: Final answer
    x = 9,926.09

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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.