Home / 12,340.42-18,512.55-4,130.50

Finding the Fourth Proportional to 12,340.42, 18,512.55 and 4,130.50

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Solution

The fourth proportional to 12,340.42, 18,512.55 and 4,130.50 is: 6,196.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.42 : 18,512.55 = 4,130.50 : x
  2. Step 2: Convert to fraction form
    12,340.42/18,512.55 = 4,130.50/x
  3. Step 3: Cross multiply
    12,340.42x = 18,512.55 × 4,130.50
  4. Step 4: Simplify right side
    12,340.42x = 76,466,087.78
  5. Step 5: Solve for x
    x = 76,466,087.78/12,340.42
  6. Step 6: Final answer
    x = 6,196.39

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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.