Home / 12,339.78-18,511.41-4,017.12

Finding the Fourth Proportional to 12,339.78, 18,511.41 and 4,017.12

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Solution

The fourth proportional to 12,339.78, 18,511.41 and 4,017.12 is: 6,026.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.78 : 18,511.41 = 4,017.12 : x
  2. Step 2: Convert to fraction form
    12,339.78/18,511.41 = 4,017.12/x
  3. Step 3: Cross multiply
    12,339.78x = 18,511.41 × 4,017.12
  4. Step 4: Simplify right side
    12,339.78x = 74,362,555.34
  5. Step 5: Solve for x
    x = 74,362,555.34/12,339.78
  6. Step 6: Final answer
    x = 6,026.25

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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.