Home / 13,721.36-18,928.52-8,677.08

Finding the Fourth Proportional to 13,721.36, 18,928.52 and 8,677.08

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Solution

The fourth proportional to 13,721.36, 18,928.52 and 8,677.08 is: 11,969.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.36 : 18,928.52 = 8,677.08 : x
  2. Step 2: Convert to fraction form
    13,721.36/18,928.52 = 8,677.08/x
  3. Step 3: Cross multiply
    13,721.36x = 18,928.52 × 8,677.08
  4. Step 4: Simplify right side
    13,721.36x = 164,244,282.32
  5. Step 5: Solve for x
    x = 164,244,282.32/13,721.36
  6. Step 6: Final answer
    x = 11,969.97

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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.