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Finding the Fourth Proportional to 13,642, 18,825.68 and 7,592.16

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Solution

The fourth proportional to 13,642, 18,825.68 and 7,592.16 is: 10,477.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642 : 18,825.68 = 7,592.16 : x
  2. Step 2: Convert to fraction form
    13,642/18,825.68 = 7,592.16/x
  3. Step 3: Cross multiply
    13,642x = 18,825.68 × 7,592.16
  4. Step 4: Simplify right side
    13,642x = 142,927,574.67
  5. Step 5: Solve for x
    x = 142,927,574.67/13,642
  6. Step 6: Final answer
    x = 10,477.02

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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.