Home / 12,140.56-18,209.40-4,241.80

Finding the Fourth Proportional to 12,140.56, 18,209.40 and 4,241.80

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Solution

The fourth proportional to 12,140.56, 18,209.40 and 4,241.80 is: 6,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.56 : 18,209.40 = 4,241.80 : x
  2. Step 2: Convert to fraction form
    12,140.56/18,209.40 = 4,241.80/x
  3. Step 3: Cross multiply
    12,140.56x = 18,209.40 × 4,241.80
  4. Step 4: Simplify right side
    12,140.56x = 77,240,632.92
  5. Step 5: Solve for x
    x = 77,240,632.92/12,140.56
  6. Step 6: Final answer
    x = 6,362.20

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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.