Home / 30,441.78-42,022.59-18,508.93

Finding the Fourth Proportional to 30,441.78, 42,022.59 and 18,508.93

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Solution

The fourth proportional to 30,441.78, 42,022.59 and 18,508.93 is: 25,550.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,441.78 : 42,022.59 = 18,508.93 : x
  2. Step 2: Convert to fraction form
    30,441.78/42,022.59 = 18,508.93/x
  3. Step 3: Cross multiply
    30,441.78x = 42,022.59 × 18,508.93
  4. Step 4: Simplify right side
    30,441.78x = 777,792,874.07
  5. Step 5: Solve for x
    x = 777,792,874.07/30,441.78
  6. Step 6: Final answer
    x = 25,550.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.