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Finding the Fourth Proportional to 30,918.99, 46,340.47 and 14,255.89

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Solution

The fourth proportional to 30,918.99, 46,340.47 and 14,255.89 is: 21,366.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.99 : 46,340.47 = 14,255.89 : x
  2. Step 2: Convert to fraction form
    30,918.99/46,340.47 = 14,255.89/x
  3. Step 3: Cross multiply
    30,918.99x = 46,340.47 × 14,255.89
  4. Step 4: Simplify right side
    30,918.99x = 660,624,642.87
  5. Step 5: Solve for x
    x = 660,624,642.87/30,918.99
  6. Step 6: Final answer
    x = 21,366.31

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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.