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Finding the Fourth Proportional to 12,369.42, 17,069.64 and 7,065.54

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Solution

The fourth proportional to 12,369.42, 17,069.64 and 7,065.54 is: 9,750.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.42 : 17,069.64 = 7,065.54 : x
  2. Step 2: Convert to fraction form
    12,369.42/17,069.64 = 7,065.54/x
  3. Step 3: Cross multiply
    12,369.42x = 17,069.64 × 7,065.54
  4. Step 4: Simplify right side
    12,369.42x = 120,606,224.21
  5. Step 5: Solve for x
    x = 120,606,224.21/12,369.42
  6. Step 6: Final answer
    x = 9,750.35

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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.