Home / 11,565.23-15,960.31-7,091.45

Finding the Fourth Proportional to 11,565.23, 15,960.31 and 7,091.45

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Solution

The fourth proportional to 11,565.23, 15,960.31 and 7,091.45 is: 9,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,565.23 : 15,960.31 = 7,091.45 : x
  2. Step 2: Convert to fraction form
    11,565.23/15,960.31 = 7,091.45/x
  3. Step 3: Cross multiply
    11,565.23x = 15,960.31 × 7,091.45
  4. Step 4: Simplify right side
    11,565.23x = 113,181,642.82
  5. Step 5: Solve for x
    x = 113,181,642.82/11,565.23
  6. Step 6: Final answer
    x = 9,786.37

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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.