Home / 13,975.76-19,286.52-7,688.12

Finding the Fourth Proportional to 13,975.76, 19,286.52 and 7,688.12

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Solution

The fourth proportional to 13,975.76, 19,286.52 and 7,688.12 is: 10,609.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.76 : 19,286.52 = 7,688.12 : x
  2. Step 2: Convert to fraction form
    13,975.76/19,286.52 = 7,688.12/x
  3. Step 3: Cross multiply
    13,975.76x = 19,286.52 × 7,688.12
  4. Step 4: Simplify right side
    13,975.76x = 148,277,080.14
  5. Step 5: Solve for x
    x = 148,277,080.14/13,975.76
  6. Step 6: Final answer
    x = 10,609.59

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1.5x scale

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.