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Finding the Fourth Proportional to 13,354.85, 18,410.01 and 9,811.91

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Solution

The fourth proportional to 13,354.85, 18,410.01 and 9,811.91 is: 13,525.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.85 : 18,410.01 = 9,811.91 : x
  2. Step 2: Convert to fraction form
    13,354.85/18,410.01 = 9,811.91/x
  3. Step 3: Cross multiply
    13,354.85x = 18,410.01 × 9,811.91
  4. Step 4: Simplify right side
    13,354.85x = 180,637,361.22
  5. Step 5: Solve for x
    x = 180,637,361.22/13,354.85
  6. Step 6: Final answer
    x = 13,525.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.