Home / 19,667.40-27,110.70-15,682.20

Finding the Fourth Proportional to 19,667.40, 27,110.70 and 15,682.20

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Solution

The fourth proportional to 19,667.40, 27,110.70 and 15,682.20 is: 21,617.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,667.40 : 27,110.70 = 15,682.20 : x
  2. Step 2: Convert to fraction form
    19,667.40/27,110.70 = 15,682.20/x
  3. Step 3: Cross multiply
    19,667.40x = 27,110.70 × 15,682.20
  4. Step 4: Simplify right side
    19,667.40x = 425,155,419.54
  5. Step 5: Solve for x
    x = 425,155,419.54/19,667.40
  6. Step 6: Final answer
    x = 21,617.27

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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.