Home / 13,513.53-18,645.35-8,208.03

Finding the Fourth Proportional to 13,513.53, 18,645.35 and 8,208.03

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Solution

The fourth proportional to 13,513.53, 18,645.35 and 8,208.03 is: 11,325.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.53 : 18,645.35 = 8,208.03 : x
  2. Step 2: Convert to fraction form
    13,513.53/18,645.35 = 8,208.03/x
  3. Step 3: Cross multiply
    13,513.53x = 18,645.35 × 8,208.03
  4. Step 4: Simplify right side
    13,513.53x = 153,041,551.12
  5. Step 5: Solve for x
    x = 153,041,551.12/13,513.53
  6. Step 6: Final answer
    x = 11,325.06

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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.