Home / 11,069.80-15,267.68-7,091.28

Finding the Fourth Proportional to 11,069.80, 15,267.68 and 7,091.28

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Solution

The fourth proportional to 11,069.80, 15,267.68 and 7,091.28 is: 9,780.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,069.80 : 15,267.68 = 7,091.28 : x
  2. Step 2: Convert to fraction form
    11,069.80/15,267.68 = 7,091.28/x
  3. Step 3: Cross multiply
    11,069.80x = 15,267.68 × 7,091.28
  4. Step 4: Simplify right side
    11,069.80x = 108,267,376.10
  5. Step 5: Solve for x
    x = 108,267,376.10/11,069.80
  6. Step 6: Final answer
    x = 9,780.43

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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.