Home / 35,685.32-53,538.78-11,990.12

Finding the Fourth Proportional to 35,685.32, 53,538.78 and 11,990.12

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Solution

The fourth proportional to 35,685.32, 53,538.78 and 11,990.12 is: 17,988.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,685.32 : 53,538.78 = 11,990.12 : x
  2. Step 2: Convert to fraction form
    35,685.32/53,538.78 = 11,990.12/x
  3. Step 3: Cross multiply
    35,685.32x = 53,538.78 × 11,990.12
  4. Step 4: Simplify right side
    35,685.32x = 641,936,396.85
  5. Step 5: Solve for x
    x = 641,936,396.85/35,685.32
  6. Step 6: Final answer
    x = 17,988.81

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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.