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Finding the Fourth Proportional to 12,709.17, 19,064.97 and 4,918.59

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Solution

The fourth proportional to 12,709.17, 19,064.97 and 4,918.59 is: 7,378.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.17 : 19,064.97 = 4,918.59 : x
  2. Step 2: Convert to fraction form
    12,709.17/19,064.97 = 4,918.59/x
  3. Step 3: Cross multiply
    12,709.17x = 19,064.97 × 4,918.59
  4. Step 4: Simplify right side
    12,709.17x = 93,772,770.79
  5. Step 5: Solve for x
    x = 93,772,770.79/12,709.17
  6. Step 6: Final answer
    x = 7,378.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.