Home / 13,753.04-18,979.14-7,784.72

Finding the Fourth Proportional to 13,753.04, 18,979.14 and 7,784.72

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Solution

The fourth proportional to 13,753.04, 18,979.14 and 7,784.72 is: 10,742.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.04 : 18,979.14 = 7,784.72 : x
  2. Step 2: Convert to fraction form
    13,753.04/18,979.14 = 7,784.72/x
  3. Step 3: Cross multiply
    13,753.04x = 18,979.14 × 7,784.72
  4. Step 4: Simplify right side
    13,753.04x = 147,747,290.74
  5. Step 5: Solve for x
    x = 147,747,290.74/13,753.04
  6. Step 6: Final answer
    x = 10,742.88

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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.