Home / 28,721.80-43,065.06-11,171.17

Finding the Fourth Proportional to 28,721.80, 43,065.06 and 11,171.17

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Solution

The fourth proportional to 28,721.80, 43,065.06 and 11,171.17 is: 16,749.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.80 : 43,065.06 = 11,171.17 : x
  2. Step 2: Convert to fraction form
    28,721.80/43,065.06 = 11,171.17/x
  3. Step 3: Cross multiply
    28,721.80x = 43,065.06 × 11,171.17
  4. Step 4: Simplify right side
    28,721.80x = 481,087,106.32
  5. Step 5: Solve for x
    x = 481,087,106.32/28,721.80
  6. Step 6: Final answer
    x = 16,749.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.