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Finding the Third Proportional to 13,431 and 18,880.50

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Solution

The third proportional to 13,431 and 18,880.50 is: 26,541.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431 : 18,880.50 = 18,880.50 : x
  2. Step 2: Convert to fraction form
    13,431/18,880.50 = 18,880.50/x
  3. Step 3: Cross multiply
    13,431x = 18,880.50 × 18,880.50
  4. Step 4: Simplify right side
    13,431x = 356,473,280.25
  5. Step 5: Solve for x
    x = 356,473,280.25/13,431
  6. Step 6: Final answer
    x = 26,541.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.