Home / 18,989.89-28,478.74-6,336.30

Finding the Fourth Proportional to 18,989.89, 28,478.74 and 6,336.30

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Solution

The fourth proportional to 18,989.89, 28,478.74 and 6,336.30 is: 9,502.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.89 : 28,478.74 = 6,336.30 : x
  2. Step 2: Convert to fraction form
    18,989.89/28,478.74 = 6,336.30/x
  3. Step 3: Cross multiply
    18,989.89x = 28,478.74 × 6,336.30
  4. Step 4: Simplify right side
    18,989.89x = 180,449,682.03
  5. Step 5: Solve for x
    x = 180,449,682.03/18,989.89
  6. Step 6: Final answer
    x = 9,502.41

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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.