Home / 12,888.63-19,331.72-4,121.19

Finding the Fourth Proportional to 12,888.63, 19,331.72 and 4,121.19

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Solution

The fourth proportional to 12,888.63, 19,331.72 and 4,121.19 is: 6,181.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.63 : 19,331.72 = 4,121.19 : x
  2. Step 2: Convert to fraction form
    12,888.63/19,331.72 = 4,121.19/x
  3. Step 3: Cross multiply
    12,888.63x = 19,331.72 × 4,121.19
  4. Step 4: Simplify right side
    12,888.63x = 79,669,670.54
  5. Step 5: Solve for x
    x = 79,669,670.54/12,888.63
  6. Step 6: Final answer
    x = 6,181.39

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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.