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Finding the Fourth Proportional to 13,323.60, 19,985.40 and 12,092.40

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Solution

The fourth proportional to 13,323.60, 19,985.40 and 12,092.40 is: 18,138.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.60 : 19,985.40 = 12,092.40 : x
  2. Step 2: Convert to fraction form
    13,323.60/19,985.40 = 12,092.40/x
  3. Step 3: Cross multiply
    13,323.60x = 19,985.40 × 12,092.40
  4. Step 4: Simplify right side
    13,323.60x = 241,671,450.96
  5. Step 5: Solve for x
    x = 241,671,450.96/13,323.60
  6. Step 6: Final answer
    x = 18,138.60

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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.