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Finding the Fourth Proportional to 12,368.85, 17,069.70 and 7,065.39

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Solution

The fourth proportional to 12,368.85, 17,069.70 and 7,065.39 is: 9,750.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.85 : 17,069.70 = 7,065.39 : x
  2. Step 2: Convert to fraction form
    12,368.85/17,069.70 = 7,065.39/x
  3. Step 3: Cross multiply
    12,368.85x = 17,069.70 × 7,065.39
  4. Step 4: Simplify right side
    12,368.85x = 120,604,087.68
  5. Step 5: Solve for x
    x = 120,604,087.68/12,368.85
  6. Step 6: Final answer
    x = 9,750.63

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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.