Home / 30,720.74-46,022.05-18,839.86

Finding the Fourth Proportional to 30,720.74, 46,022.05 and 18,839.86

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Solution

The fourth proportional to 30,720.74, 46,022.05 and 18,839.86 is: 28,223.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.74 : 46,022.05 = 18,839.86 : x
  2. Step 2: Convert to fraction form
    30,720.74/46,022.05 = 18,839.86/x
  3. Step 3: Cross multiply
    30,720.74x = 46,022.05 × 18,839.86
  4. Step 4: Simplify right side
    30,720.74x = 867,048,887.41
  5. Step 5: Solve for x
    x = 867,048,887.41/30,720.74
  6. Step 6: Final answer
    x = 28,223.57

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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.