Home / 12,890.16-19,336.26-4,125.08

Finding the Fourth Proportional to 12,890.16, 19,336.26 and 4,125.08

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Solution

The fourth proportional to 12,890.16, 19,336.26 and 4,125.08 is: 6,187.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.16 : 19,336.26 = 4,125.08 : x
  2. Step 2: Convert to fraction form
    12,890.16/19,336.26 = 4,125.08/x
  3. Step 3: Cross multiply
    12,890.16x = 19,336.26 × 4,125.08
  4. Step 4: Simplify right side
    12,890.16x = 79,763,522.72
  5. Step 5: Solve for x
    x = 79,763,522.72/12,890.16
  6. Step 6: Final answer
    x = 6,187.94

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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.