Home / 18,878.86-28,317.96-4,838.74

Finding the Fourth Proportional to 18,878.86, 28,317.96 and 4,838.74

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Solution

The fourth proportional to 18,878.86, 28,317.96 and 4,838.74 is: 7,258.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.86 : 28,317.96 = 4,838.74 : x
  2. Step 2: Convert to fraction form
    18,878.86/28,317.96 = 4,838.74/x
  3. Step 3: Cross multiply
    18,878.86x = 28,317.96 × 4,838.74
  4. Step 4: Simplify right side
    18,878.86x = 137,023,245.77
  5. Step 5: Solve for x
    x = 137,023,245.77/18,878.86
  6. Step 6: Final answer
    x = 7,258.03

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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.