Home / 13,437.63-18,545.43-8,135.37

Finding the Fourth Proportional to 13,437.63, 18,545.43 and 8,135.37

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Solution

The fourth proportional to 13,437.63, 18,545.43 and 8,135.37 is: 11,227.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.63 : 18,545.43 = 8,135.37 : x
  2. Step 2: Convert to fraction form
    13,437.63/18,545.43 = 8,135.37/x
  3. Step 3: Cross multiply
    13,437.63x = 18,545.43 × 8,135.37
  4. Step 4: Simplify right side
    13,437.63x = 150,873,801.46
  5. Step 5: Solve for x
    x = 150,873,801.46/13,437.63
  6. Step 6: Final answer
    x = 11,227.71

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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.