Home / 21,163.23-29,138.67-17,970.21

Finding the Fourth Proportional to 21,163.23, 29,138.67 and 17,970.21

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Solution

The fourth proportional to 21,163.23, 29,138.67 and 17,970.21 is: 24,742.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.23 : 29,138.67 = 17,970.21 : x
  2. Step 2: Convert to fraction form
    21,163.23/29,138.67 = 17,970.21/x
  3. Step 3: Cross multiply
    21,163.23x = 29,138.67 × 17,970.21
  4. Step 4: Simplify right side
    21,163.23x = 523,628,019.02
  5. Step 5: Solve for x
    x = 523,628,019.02/21,163.23
  6. Step 6: Final answer
    x = 24,742.35

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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.