Home / 30,763.53-46,112.49-12,990.51

Finding the Fourth Proportional to 30,763.53, 46,112.49 and 12,990.51

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Solution

The fourth proportional to 30,763.53, 46,112.49 and 12,990.51 is: 19,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,763.53 : 46,112.49 = 12,990.51 : x
  2. Step 2: Convert to fraction form
    30,763.53/46,112.49 = 12,990.51/x
  3. Step 3: Cross multiply
    30,763.53x = 46,112.49 × 12,990.51
  4. Step 4: Simplify right side
    30,763.53x = 599,024,762.47
  5. Step 5: Solve for x
    x = 599,024,762.47/30,763.53
  6. Step 6: Final answer
    x = 19,471.91

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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.