Home / 30,720.96-46,022.32-18,840.05

Finding the Fourth Proportional to 30,720.96, 46,022.32 and 18,840.05

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Solution

The fourth proportional to 30,720.96, 46,022.32 and 18,840.05 is: 28,223.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.96 : 46,022.32 = 18,840.05 : x
  2. Step 2: Convert to fraction form
    30,720.96/46,022.32 = 18,840.05/x
  3. Step 3: Cross multiply
    30,720.96x = 46,022.32 × 18,840.05
  4. Step 4: Simplify right side
    30,720.96x = 867,062,809.92
  5. Step 5: Solve for x
    x = 867,062,809.92/30,720.96
  6. Step 6: Final answer
    x = 28,223.82

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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.