Home / 13,859.96-19,121.32-8,545.55

Finding the Fourth Proportional to 13,859.96, 19,121.32 and 8,545.55

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Solution

The fourth proportional to 13,859.96, 19,121.32 and 8,545.55 is: 11,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.96 : 19,121.32 = 8,545.55 : x
  2. Step 2: Convert to fraction form
    13,859.96/19,121.32 = 8,545.55/x
  3. Step 3: Cross multiply
    13,859.96x = 19,121.32 × 8,545.55
  4. Step 4: Simplify right side
    13,859.96x = 163,402,222.57
  5. Step 5: Solve for x
    x = 163,402,222.57/13,859.96
  6. Step 6: Final answer
    x = 11,789.51

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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.