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Finding the Fourth Proportional to 14,643.63, 20,208.56 and 8,356.59

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Solution

The fourth proportional to 14,643.63, 20,208.56 and 8,356.59 is: 11,532.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,643.63 : 20,208.56 = 8,356.59 : x
  2. Step 2: Convert to fraction form
    14,643.63/20,208.56 = 8,356.59/x
  3. Step 3: Cross multiply
    14,643.63x = 20,208.56 × 8,356.59
  4. Step 4: Simplify right side
    14,643.63x = 168,874,608.63
  5. Step 5: Solve for x
    x = 168,874,608.63/14,643.63
  6. Step 6: Final answer
    x = 11,532.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.