Home / 21,163.68-29,200.10-13,207.19

Finding the Fourth Proportional to 21,163.68, 29,200.10 and 13,207.19

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Solution

The fourth proportional to 21,163.68, 29,200.10 and 13,207.19 is: 18,222.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.68 : 29,200.10 = 13,207.19 : x
  2. Step 2: Convert to fraction form
    21,163.68/29,200.10 = 13,207.19/x
  3. Step 3: Cross multiply
    21,163.68x = 29,200.10 × 13,207.19
  4. Step 4: Simplify right side
    21,163.68x = 385,651,056.68
  5. Step 5: Solve for x
    x = 385,651,056.68/21,163.68
  6. Step 6: Final answer
    x = 18,222.31

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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.