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Finding the Fourth Proportional to 13,623.63, 18,801.09 and 7,655.18

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Solution

The fourth proportional to 13,623.63, 18,801.09 and 7,655.18 is: 10,564.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.63 : 18,801.09 = 7,655.18 : x
  2. Step 2: Convert to fraction form
    13,623.63/18,801.09 = 7,655.18/x
  3. Step 3: Cross multiply
    13,623.63x = 18,801.09 × 7,655.18
  4. Step 4: Simplify right side
    13,623.63x = 143,925,634.14
  5. Step 5: Solve for x
    x = 143,925,634.14/13,623.63
  6. Step 6: Final answer
    x = 10,564.41

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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.