Home / 11,681.15-17,525.43-7,990.65

Finding the Fourth Proportional to 11,681.15, 17,525.43 and 7,990.65

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Solution

The fourth proportional to 11,681.15, 17,525.43 and 7,990.65 is: 11,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.15 : 17,525.43 = 7,990.65 : x
  2. Step 2: Convert to fraction form
    11,681.15/17,525.43 = 7,990.65/x
  3. Step 3: Cross multiply
    11,681.15x = 17,525.43 × 7,990.65
  4. Step 4: Simplify right side
    11,681.15x = 140,039,577.23
  5. Step 5: Solve for x
    x = 140,039,577.23/11,681.15
  6. Step 6: Final answer
    x = 11,988.51

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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.