Home / 28,120.02-42,179.91-8,398.54

Finding the Fourth Proportional to 28,120.02, 42,179.91 and 8,398.54

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Solution

The fourth proportional to 28,120.02, 42,179.91 and 8,398.54 is: 12,597.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.02 : 42,179.91 = 8,398.54 : x
  2. Step 2: Convert to fraction form
    28,120.02/42,179.91 = 8,398.54/x
  3. Step 3: Cross multiply
    28,120.02x = 42,179.91 × 8,398.54
  4. Step 4: Simplify right side
    28,120.02x = 354,249,661.33
  5. Step 5: Solve for x
    x = 354,249,661.33/28,120.02
  6. Step 6: Final answer
    x = 12,597.77

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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.