Home / 13,120.14-19,673.73-5,721.40

Finding the Fourth Proportional to 13,120.14, 19,673.73 and 5,721.40

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Solution

The fourth proportional to 13,120.14, 19,673.73 and 5,721.40 is: 8,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.14 : 19,673.73 = 5,721.40 : x
  2. Step 2: Convert to fraction form
    13,120.14/19,673.73 = 5,721.40/x
  3. Step 3: Cross multiply
    13,120.14x = 19,673.73 × 5,721.40
  4. Step 4: Simplify right side
    13,120.14x = 112,561,278.82
  5. Step 5: Solve for x
    x = 112,561,278.82/13,120.14
  6. Step 6: Final answer
    x = 8,579.27

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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.