Home / 18,742.86-28,105.02-6,258.60

Finding the Fourth Proportional to 18,742.86, 28,105.02 and 6,258.60

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Solution

The fourth proportional to 18,742.86, 28,105.02 and 6,258.60 is: 9,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.86 : 28,105.02 = 6,258.60 : x
  2. Step 2: Convert to fraction form
    18,742.86/28,105.02 = 6,258.60/x
  3. Step 3: Cross multiply
    18,742.86x = 28,105.02 × 6,258.60
  4. Step 4: Simplify right side
    18,742.86x = 175,898,078.17
  5. Step 5: Solve for x
    x = 175,898,078.17/18,742.86
  6. Step 6: Final answer
    x = 9,384.80

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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.