Home / 12,120.70-18,194.55-6,275.74

Finding the Fourth Proportional to 12,120.70, 18,194.55 and 6,275.74

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Solution

The fourth proportional to 12,120.70, 18,194.55 and 6,275.74 is: 9,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.70 : 18,194.55 = 6,275.74 : x
  2. Step 2: Convert to fraction form
    12,120.70/18,194.55 = 6,275.74/x
  3. Step 3: Cross multiply
    12,120.70x = 18,194.55 × 6,275.74
  4. Step 4: Simplify right side
    12,120.70x = 114,184,265.22
  5. Step 5: Solve for x
    x = 114,184,265.22/12,120.70
  6. Step 6: Final answer
    x = 9,420.60

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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.