Home / 13,753.07-18,979.69-7,784.61

Finding the Fourth Proportional to 13,753.07, 18,979.69 and 7,784.61

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Solution

The fourth proportional to 13,753.07, 18,979.69 and 7,784.61 is: 10,743.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.07 : 18,979.69 = 7,784.61 : x
  2. Step 2: Convert to fraction form
    13,753.07/18,979.69 = 7,784.61/x
  3. Step 3: Cross multiply
    13,753.07x = 18,979.69 × 7,784.61
  4. Step 4: Simplify right side
    13,753.07x = 147,749,526.24
  5. Step 5: Solve for x
    x = 147,749,526.24/13,753.07
  6. Step 6: Final answer
    x = 10,743.02

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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.