Home / 10,820.86-16,231.29-10,121.02

Finding the Fourth Proportional to 10,820.86, 16,231.29 and 10,121.02

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Solution

The fourth proportional to 10,820.86, 16,231.29 and 10,121.02 is: 15,181.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,820.86 : 16,231.29 = 10,121.02 : x
  2. Step 2: Convert to fraction form
    10,820.86/16,231.29 = 10,121.02/x
  3. Step 3: Cross multiply
    10,820.86x = 16,231.29 × 10,121.02
  4. Step 4: Simplify right side
    10,820.86x = 164,277,210.72
  5. Step 5: Solve for x
    x = 164,277,210.72/10,820.86
  6. Step 6: Final answer
    x = 15,181.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.