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Finding the Fourth Proportional to 12,369.75, 17,071.16 and 7,064.45

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Solution

The fourth proportional to 12,369.75, 17,071.16 and 7,064.45 is: 9,749.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.75 : 17,071.16 = 7,064.45 : x
  2. Step 2: Convert to fraction form
    12,369.75/17,071.16 = 7,064.45/x
  3. Step 3: Cross multiply
    12,369.75x = 17,071.16 × 7,064.45
  4. Step 4: Simplify right side
    12,369.75x = 120,598,299.60
  5. Step 5: Solve for x
    x = 120,598,299.60/12,369.75
  6. Step 6: Final answer
    x = 9,749.46

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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.