Home / 13,619.79-18,795.78-7,953.66

Finding the Fourth Proportional to 13,619.79, 18,795.78 and 7,953.66

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Solution

The fourth proportional to 13,619.79, 18,795.78 and 7,953.66 is: 10,976.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.79 : 18,795.78 = 7,953.66 : x
  2. Step 2: Convert to fraction form
    13,619.79/18,795.78 = 7,953.66/x
  3. Step 3: Cross multiply
    13,619.79x = 18,795.78 × 7,953.66
  4. Step 4: Simplify right side
    13,619.79x = 149,495,243.55
  5. Step 5: Solve for x
    x = 149,495,243.55/13,619.79
  6. Step 6: Final answer
    x = 10,976.33

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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.