Home / 21,571.80-29,769.51-13,073.64

Finding the Fourth Proportional to 21,571.80, 29,769.51 and 13,073.64

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Solution

The fourth proportional to 21,571.80, 29,769.51 and 13,073.64 is: 18,041.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.80 : 29,769.51 = 13,073.64 : x
  2. Step 2: Convert to fraction form
    21,571.80/29,769.51 = 13,073.64/x
  3. Step 3: Cross multiply
    21,571.80x = 29,769.51 × 13,073.64
  4. Step 4: Simplify right side
    21,571.80x = 389,195,856.72
  5. Step 5: Solve for x
    x = 389,195,856.72/21,571.80
  6. Step 6: Final answer
    x = 18,041.88

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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.