Home / 13,645.77-18,828.32-7,979.41

Finding the Fourth Proportional to 13,645.77, 18,828.32 and 7,979.41

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Solution

The fourth proportional to 13,645.77, 18,828.32 and 7,979.41 is: 11,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.77 : 18,828.32 = 7,979.41 : x
  2. Step 2: Convert to fraction form
    13,645.77/18,828.32 = 7,979.41/x
  3. Step 3: Cross multiply
    13,645.77x = 18,828.32 × 7,979.41
  4. Step 4: Simplify right side
    13,645.77x = 150,238,868.53
  5. Step 5: Solve for x
    x = 150,238,868.53/13,645.77
  6. Step 6: Final answer
    x = 11,009.93

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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.