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Finding the Fourth Proportional to 12,396.93, 18,595.43 and 8,715.63

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Solution

The fourth proportional to 12,396.93, 18,595.43 and 8,715.63 is: 13,073.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.93 : 18,595.43 = 8,715.63 : x
  2. Step 2: Convert to fraction form
    12,396.93/18,595.43 = 8,715.63/x
  3. Step 3: Cross multiply
    12,396.93x = 18,595.43 × 8,715.63
  4. Step 4: Simplify right side
    12,396.93x = 162,070,887.57
  5. Step 5: Solve for x
    x = 162,070,887.57/12,396.93
  6. Step 6: Final answer
    x = 13,073.47

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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.