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Finding the Fourth Proportional to 13,818, 19,069.60 and 7,530.24

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Solution

The fourth proportional to 13,818, 19,069.60 and 7,530.24 is: 10,392.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818 : 19,069.60 = 7,530.24 : x
  2. Step 2: Convert to fraction form
    13,818/19,069.60 = 7,530.24/x
  3. Step 3: Cross multiply
    13,818x = 19,069.60 × 7,530.24
  4. Step 4: Simplify right side
    13,818x = 143,598,664.70
  5. Step 5: Solve for x
    x = 143,598,664.70/13,818
  6. Step 6: Final answer
    x = 10,392.15

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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.