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Finding the Fourth Proportional to 12,858.54, 17,745.12 and 7,193.10

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Solution

The fourth proportional to 12,858.54, 17,745.12 and 7,193.10 is: 9,926.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.54 : 17,745.12 = 7,193.10 : x
  2. Step 2: Convert to fraction form
    12,858.54/17,745.12 = 7,193.10/x
  3. Step 3: Cross multiply
    12,858.54x = 17,745.12 × 7,193.10
  4. Step 4: Simplify right side
    12,858.54x = 127,642,422.67
  5. Step 5: Solve for x
    x = 127,642,422.67/12,858.54
  6. Step 6: Final answer
    x = 9,926.67

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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.