Home / 13,161.25-18,163.60-7,497.77

Finding the Fourth Proportional to 13,161.25, 18,163.60 and 7,497.77

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Solution

The fourth proportional to 13,161.25, 18,163.60 and 7,497.77 is: 10,347.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.25 : 18,163.60 = 7,497.77 : x
  2. Step 2: Convert to fraction form
    13,161.25/18,163.60 = 7,497.77/x
  3. Step 3: Cross multiply
    13,161.25x = 18,163.60 × 7,497.77
  4. Step 4: Simplify right side
    13,161.25x = 136,186,495.17
  5. Step 5: Solve for x
    x = 136,186,495.17/13,161.25
  6. Step 6: Final answer
    x = 10,347.54

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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.