Home / 12,423.20-18,634.80-4,630.40

Finding the Fourth Proportional to 12,423.20, 18,634.80 and 4,630.40

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Solution

The fourth proportional to 12,423.20, 18,634.80 and 4,630.40 is: 6,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.20 : 18,634.80 = 4,630.40 : x
  2. Step 2: Convert to fraction form
    12,423.20/18,634.80 = 4,630.40/x
  3. Step 3: Cross multiply
    12,423.20x = 18,634.80 × 4,630.40
  4. Step 4: Simplify right side
    12,423.20x = 86,286,577.92
  5. Step 5: Solve for x
    x = 86,286,577.92/12,423.20
  6. Step 6: Final answer
    x = 6,945.60

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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.