Home / 12,888.06-19,333.31-4,120.89

Finding the Fourth Proportional to 12,888.06, 19,333.31 and 4,120.89

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Solution

The fourth proportional to 12,888.06, 19,333.31 and 4,120.89 is: 6,181.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.06 : 19,333.31 = 4,120.89 : x
  2. Step 2: Convert to fraction form
    12,888.06/19,333.31 = 4,120.89/x
  3. Step 3: Cross multiply
    12,888.06x = 19,333.31 × 4,120.89
  4. Step 4: Simplify right side
    12,888.06x = 79,670,423.24
  5. Step 5: Solve for x
    x = 79,670,423.24/12,888.06
  6. Step 6: Final answer
    x = 6,181.72

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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.