Home / 15,222.21-20,998.96-10,186.63

Finding the Fourth Proportional to 15,222.21, 20,998.96 and 10,186.63

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Solution

The fourth proportional to 15,222.21, 20,998.96 and 10,186.63 is: 14,052.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.21 : 20,998.96 = 10,186.63 : x
  2. Step 2: Convert to fraction form
    15,222.21/20,998.96 = 10,186.63/x
  3. Step 3: Cross multiply
    15,222.21x = 20,998.96 × 10,186.63
  4. Step 4: Simplify right side
    15,222.21x = 213,908,635.90
  5. Step 5: Solve for x
    x = 213,908,635.90/15,222.21
  6. Step 6: Final answer
    x = 14,052.40

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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.