Home / 12,420.27-18,630.24-3,060.40

Finding the Fourth Proportional to 12,420.27, 18,630.24 and 3,060.40

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Solution

The fourth proportional to 12,420.27, 18,630.24 and 3,060.40 is: 4,590.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.27 : 18,630.24 = 3,060.40 : x
  2. Step 2: Convert to fraction form
    12,420.27/18,630.24 = 3,060.40/x
  3. Step 3: Cross multiply
    12,420.27x = 18,630.24 × 3,060.40
  4. Step 4: Simplify right side
    12,420.27x = 57,015,986.50
  5. Step 5: Solve for x
    x = 57,015,986.50/12,420.27
  6. Step 6: Final answer
    x = 4,590.56

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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.