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Finding the Fourth Proportional to 12,904.76, 19,344.07 and 8,745.19

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Solution

The fourth proportional to 12,904.76, 19,344.07 and 8,745.19 is: 13,108.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.76 : 19,344.07 = 8,745.19 : x
  2. Step 2: Convert to fraction form
    12,904.76/19,344.07 = 8,745.19/x
  3. Step 3: Cross multiply
    12,904.76x = 19,344.07 × 8,745.19
  4. Step 4: Simplify right side
    12,904.76x = 169,167,427.08
  5. Step 5: Solve for x
    x = 169,167,427.08/12,904.76
  6. Step 6: Final answer
    x = 13,108.92

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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.