Home / 19,619.62-29,431.96-7,137.72

Finding the Fourth Proportional to 19,619.62, 29,431.96 and 7,137.72

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Solution

The fourth proportional to 19,619.62, 29,431.96 and 7,137.72 is: 10,707.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.62 : 29,431.96 = 7,137.72 : x
  2. Step 2: Convert to fraction form
    19,619.62/29,431.96 = 7,137.72/x
  3. Step 3: Cross multiply
    19,619.62x = 29,431.96 × 7,137.72
  4. Step 4: Simplify right side
    19,619.62x = 210,077,071.69
  5. Step 5: Solve for x
    x = 210,077,071.69/19,619.62
  6. Step 6: Final answer
    x = 10,707.50

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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.