Home / 19,705.82-27,176.31-12,630.87

Finding the Fourth Proportional to 19,705.82, 27,176.31 and 12,630.87

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Solution

The fourth proportional to 19,705.82, 27,176.31 and 12,630.87 is: 17,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,705.82 : 27,176.31 = 12,630.87 : x
  2. Step 2: Convert to fraction form
    19,705.82/27,176.31 = 12,630.87/x
  3. Step 3: Cross multiply
    19,705.82x = 27,176.31 × 12,630.87
  4. Step 4: Simplify right side
    19,705.82x = 343,260,438.69
  5. Step 5: Solve for x
    x = 343,260,438.69/19,705.82
  6. Step 6: Final answer
    x = 17,419.25

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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.