Home / 28,670.25-42,991.47-12,025.83

Finding the Fourth Proportional to 28,670.25, 42,991.47 and 12,025.83

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Solution

The fourth proportional to 28,670.25, 42,991.47 and 12,025.83 is: 18,032.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,670.25 : 42,991.47 = 12,025.83 : x
  2. Step 2: Convert to fraction form
    28,670.25/42,991.47 = 12,025.83/x
  3. Step 3: Cross multiply
    28,670.25x = 42,991.47 × 12,025.83
  4. Step 4: Simplify right side
    28,670.25x = 517,008,109.67
  5. Step 5: Solve for x
    x = 517,008,109.67/28,670.25
  6. Step 6: Final answer
    x = 18,032.91

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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.