Home / 13,569.75-18,727.34-7,981.83

Finding the Fourth Proportional to 13,569.75, 18,727.34 and 7,981.83

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Solution

The fourth proportional to 13,569.75, 18,727.34 and 7,981.83 is: 11,015.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.75 : 18,727.34 = 7,981.83 : x
  2. Step 2: Convert to fraction form
    13,569.75/18,727.34 = 7,981.83/x
  3. Step 3: Cross multiply
    13,569.75x = 18,727.34 × 7,981.83
  4. Step 4: Simplify right side
    13,569.75x = 149,478,404.32
  5. Step 5: Solve for x
    x = 149,478,404.32/13,569.75
  6. Step 6: Final answer
    x = 11,015.56

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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.