Home / 12,621.64-18,927.73-4,186.59

Finding the Fourth Proportional to 12,621.64, 18,927.73 and 4,186.59

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Solution

The fourth proportional to 12,621.64, 18,927.73 and 4,186.59 is: 6,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.64 : 18,927.73 = 4,186.59 : x
  2. Step 2: Convert to fraction form
    12,621.64/18,927.73 = 4,186.59/x
  3. Step 3: Cross multiply
    12,621.64x = 18,927.73 × 4,186.59
  4. Step 4: Simplify right side
    12,621.64x = 79,242,645.14
  5. Step 5: Solve for x
    x = 79,242,645.14/12,621.64
  6. Step 6: Final answer
    x = 6,278.32

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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.