Home / 30,945.78-46,411.23-14,289.81

Finding the Fourth Proportional to 30,945.78, 46,411.23 and 14,289.81

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Solution

The fourth proportional to 30,945.78, 46,411.23 and 14,289.81 is: 21,431.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,945.78 : 46,411.23 = 14,289.81 : x
  2. Step 2: Convert to fraction form
    30,945.78/46,411.23 = 14,289.81/x
  3. Step 3: Cross multiply
    30,945.78x = 46,411.23 × 14,289.81
  4. Step 4: Simplify right side
    30,945.78x = 663,207,658.57
  5. Step 5: Solve for x
    x = 663,207,658.57/30,945.78
  6. Step 6: Final answer
    x = 21,431.28

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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.