Home / 28,095.75-42,143.47-11,455.72

Finding the Fourth Proportional to 28,095.75, 42,143.47 and 11,455.72

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Solution

The fourth proportional to 28,095.75, 42,143.47 and 11,455.72 is: 17,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,095.75 : 42,143.47 = 11,455.72 : x
  2. Step 2: Convert to fraction form
    28,095.75/42,143.47 = 11,455.72/x
  3. Step 3: Cross multiply
    28,095.75x = 42,143.47 × 11,455.72
  4. Step 4: Simplify right side
    28,095.75x = 482,783,792.15
  5. Step 5: Solve for x
    x = 482,783,792.15/28,095.75
  6. Step 6: Final answer
    x = 17,183.52

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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.