Home / 12,287.64-18,432.66-4,890.37

Finding the Fourth Proportional to 12,287.64, 18,432.66 and 4,890.37

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Solution

The fourth proportional to 12,287.64, 18,432.66 and 4,890.37 is: 7,336.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.64 : 18,432.66 = 4,890.37 : x
  2. Step 2: Convert to fraction form
    12,287.64/18,432.66 = 4,890.37/x
  3. Step 3: Cross multiply
    12,287.64x = 18,432.66 × 4,890.37
  4. Step 4: Simplify right side
    12,287.64x = 90,142,527.48
  5. Step 5: Solve for x
    x = 90,142,527.48/12,287.64
  6. Step 6: Final answer
    x = 7,336.03

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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.