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Finding the Fourth Proportional to 13,359.30, 18,741.90 and 13,359.30

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Solution

The fourth proportional to 13,359.30, 18,741.90 and 13,359.30 is: 18,741.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.30 : 18,741.90 = 13,359.30 : x
  2. Step 2: Convert to fraction form
    13,359.30/18,741.90 = 13,359.30/x
  3. Step 3: Cross multiply
    13,359.30x = 18,741.90 × 13,359.30
  4. Step 4: Simplify right side
    13,359.30x = 250,378,664.67
  5. Step 5: Solve for x
    x = 250,378,664.67/13,359.30
  6. Step 6: Final answer
    x = 18,741.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.