Home / 11,173.23-15,396.80-7,977.51

Finding the Fourth Proportional to 11,173.23, 15,396.80 and 7,977.51

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Solution

The fourth proportional to 11,173.23, 15,396.80 and 7,977.51 is: 10,993.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,173.23 : 15,396.80 = 7,977.51 : x
  2. Step 2: Convert to fraction form
    11,173.23/15,396.80 = 7,977.51/x
  3. Step 3: Cross multiply
    11,173.23x = 15,396.80 × 7,977.51
  4. Step 4: Simplify right side
    11,173.23x = 122,828,125.97
  5. Step 5: Solve for x
    x = 122,828,125.97/11,173.23
  6. Step 6: Final answer
    x = 10,993.07

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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.