Home / 28,243.22-42,368.36-8,521.74

Finding the Fourth Proportional to 28,243.22, 42,368.36 and 8,521.74

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Solution

The fourth proportional to 28,243.22, 42,368.36 and 8,521.74 is: 12,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.22 : 42,368.36 = 8,521.74 : x
  2. Step 2: Convert to fraction form
    28,243.22/42,368.36 = 8,521.74/x
  3. Step 3: Cross multiply
    28,243.22x = 42,368.36 × 8,521.74
  4. Step 4: Simplify right side
    28,243.22x = 361,052,105.54
  5. Step 5: Solve for x
    x = 361,052,105.54/28,243.22
  6. Step 6: Final answer
    x = 12,783.68

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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.