Home / 12,289.12-18,433.76-3,055.20

Finding the Fourth Proportional to 12,289.12, 18,433.76 and 3,055.20

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Solution

The fourth proportional to 12,289.12, 18,433.76 and 3,055.20 is: 4,582.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.12 : 18,433.76 = 3,055.20 : x
  2. Step 2: Convert to fraction form
    12,289.12/18,433.76 = 3,055.20/x
  3. Step 3: Cross multiply
    12,289.12x = 18,433.76 × 3,055.20
  4. Step 4: Simplify right side
    12,289.12x = 56,318,823.55
  5. Step 5: Solve for x
    x = 56,318,823.55/12,289.12
  6. Step 6: Final answer
    x = 4,582.82

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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.