Home / 13,718.94-18,931.91-7,669.33

Finding the Fourth Proportional to 13,718.94, 18,931.91 and 7,669.33

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Solution

The fourth proportional to 13,718.94, 18,931.91 and 7,669.33 is: 10,583.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.94 : 18,931.91 = 7,669.33 : x
  2. Step 2: Convert to fraction form
    13,718.94/18,931.91 = 7,669.33/x
  3. Step 3: Cross multiply
    13,718.94x = 18,931.91 × 7,669.33
  4. Step 4: Simplify right side
    13,718.94x = 145,195,065.32
  5. Step 5: Solve for x
    x = 145,195,065.32/13,718.94
  6. Step 6: Final answer
    x = 10,583.55

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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.