Home / 12,184.80-18,277.20-3,420.48

Finding the Fourth Proportional to 12,184.80, 18,277.20 and 3,420.48

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Solution

The fourth proportional to 12,184.80, 18,277.20 and 3,420.48 is: 5,130.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,184.80 : 18,277.20 = 3,420.48 : x
  2. Step 2: Convert to fraction form
    12,184.80/18,277.20 = 3,420.48/x
  3. Step 3: Cross multiply
    12,184.80x = 18,277.20 × 3,420.48
  4. Step 4: Simplify right side
    12,184.80x = 62,516,797.06
  5. Step 5: Solve for x
    x = 62,516,797.06/12,184.80
  6. Step 6: Final answer
    x = 5,130.72

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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.