Home / 12,118.56-18,140.40-6,774.18

Finding the Fourth Proportional to 12,118.56, 18,140.40 and 6,774.18

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Solution

The fourth proportional to 12,118.56, 18,140.40 and 6,774.18 is: 10,140.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.56 : 18,140.40 = 6,774.18 : x
  2. Step 2: Convert to fraction form
    12,118.56/18,140.40 = 6,774.18/x
  3. Step 3: Cross multiply
    12,118.56x = 18,140.40 × 6,774.18
  4. Step 4: Simplify right side
    12,118.56x = 122,886,334.87
  5. Step 5: Solve for x
    x = 122,886,334.87/12,118.56
  6. Step 6: Final answer
    x = 10,140.34

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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.