Home / 12,081.36-18,118.80-3,314.16

Finding the Fourth Proportional to 12,081.36, 18,118.80 and 3,314.16

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Solution

The fourth proportional to 12,081.36, 18,118.80 and 3,314.16 is: 4,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.36 : 18,118.80 = 3,314.16 : x
  2. Step 2: Convert to fraction form
    12,081.36/18,118.80 = 3,314.16/x
  3. Step 3: Cross multiply
    12,081.36x = 18,118.80 × 3,314.16
  4. Step 4: Simplify right side
    12,081.36x = 60,048,602.21
  5. Step 5: Solve for x
    x = 60,048,602.21/12,081.36
  6. Step 6: Final answer
    x = 4,970.35

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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.