Home / 21,645.84-29,867.36-12,571.62

Finding the Fourth Proportional to 21,645.84, 29,867.36 and 12,571.62

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Solution

The fourth proportional to 21,645.84, 29,867.36 and 12,571.62 is: 17,346.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,645.84 : 29,867.36 = 12,571.62 : x
  2. Step 2: Convert to fraction form
    21,645.84/29,867.36 = 12,571.62/x
  3. Step 3: Cross multiply
    21,645.84x = 29,867.36 × 12,571.62
  4. Step 4: Simplify right side
    21,645.84x = 375,481,100.32
  5. Step 5: Solve for x
    x = 375,481,100.32/21,645.84
  6. Step 6: Final answer
    x = 17,346.57

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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.