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Finding the Fourth Proportional to 13,342.60, 19,985.10 and 11,038.60

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Solution

The fourth proportional to 13,342.60, 19,985.10 and 11,038.60 is: 16,534.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.60 : 19,985.10 = 11,038.60 : x
  2. Step 2: Convert to fraction form
    13,342.60/19,985.10 = 11,038.60/x
  3. Step 3: Cross multiply
    13,342.60x = 19,985.10 × 11,038.60
  4. Step 4: Simplify right side
    13,342.60x = 220,607,524.86
  5. Step 5: Solve for x
    x = 220,607,524.86/13,342.60
  6. Step 6: Final answer
    x = 16,534.07

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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.