Home / 18,213.61-27,326.93-7,128.25

Finding the Fourth Proportional to 18,213.61, 27,326.93 and 7,128.25

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Solution

The fourth proportional to 18,213.61, 27,326.93 and 7,128.25 is: 10,694.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.61 : 27,326.93 = 7,128.25 : x
  2. Step 2: Convert to fraction form
    18,213.61/27,326.93 = 7,128.25/x
  3. Step 3: Cross multiply
    18,213.61x = 27,326.93 × 7,128.25
  4. Step 4: Simplify right side
    18,213.61x = 194,793,188.77
  5. Step 5: Solve for x
    x = 194,793,188.77/18,213.61
  6. Step 6: Final answer
    x = 10,694.92

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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.