Home / 13,995.71-19,313.21-7,708.09

Finding the Fourth Proportional to 13,995.71, 19,313.21 and 7,708.09

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Solution

The fourth proportional to 13,995.71, 19,313.21 and 7,708.09 is: 10,636.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.71 : 19,313.21 = 7,708.09 : x
  2. Step 2: Convert to fraction form
    13,995.71/19,313.21 = 7,708.09/x
  3. Step 3: Cross multiply
    13,995.71x = 19,313.21 × 7,708.09
  4. Step 4: Simplify right side
    13,995.71x = 148,867,960.87
  5. Step 5: Solve for x
    x = 148,867,960.87/13,995.71
  6. Step 6: Final answer
    x = 10,636.69

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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.