Home / 22,579.21-31,156.36-13,019.45

Finding the Fourth Proportional to 22,579.21, 31,156.36 and 13,019.45

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Solution

The fourth proportional to 22,579.21, 31,156.36 and 13,019.45 is: 17,965.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,579.21 : 31,156.36 = 13,019.45 : x
  2. Step 2: Convert to fraction form
    22,579.21/31,156.36 = 13,019.45/x
  3. Step 3: Cross multiply
    22,579.21x = 31,156.36 × 13,019.45
  4. Step 4: Simplify right side
    22,579.21x = 405,638,716.54
  5. Step 5: Solve for x
    x = 405,638,716.54/22,579.21
  6. Step 6: Final answer
    x = 17,965.14

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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.