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Finding the Fourth Proportional to 13,165.60, 19,719.60 and 12,877.60

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Solution

The fourth proportional to 13,165.60, 19,719.60 and 12,877.60 is: 19,288.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.60 : 19,719.60 = 12,877.60 : x
  2. Step 2: Convert to fraction form
    13,165.60/19,719.60 = 12,877.60/x
  3. Step 3: Cross multiply
    13,165.60x = 19,719.60 × 12,877.60
  4. Step 4: Simplify right side
    13,165.60x = 253,941,120.96
  5. Step 5: Solve for x
    x = 253,941,120.96/13,165.60
  6. Step 6: Final answer
    x = 19,288.23

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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.