Home / 12,121.15-18,181.74-10,472.71

Finding the Fourth Proportional to 12,121.15, 18,181.74 and 10,472.71

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Solution

The fourth proportional to 12,121.15, 18,181.74 and 10,472.71 is: 15,709.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.15 : 18,181.74 = 10,472.71 : x
  2. Step 2: Convert to fraction form
    12,121.15/18,181.74 = 10,472.71/x
  3. Step 3: Cross multiply
    12,121.15x = 18,181.74 × 10,472.71
  4. Step 4: Simplify right side
    12,121.15x = 190,412,090.32
  5. Step 5: Solve for x
    x = 190,412,090.32/12,121.15
  6. Step 6: Final answer
    x = 15,709.08

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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.