Home / 13,589.72-18,745.18-9,818.42

Finding the Fourth Proportional to 13,589.72, 18,745.18 and 9,818.42

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Solution

The fourth proportional to 13,589.72, 18,745.18 and 9,818.42 is: 13,543.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.72 : 18,745.18 = 9,818.42 : x
  2. Step 2: Convert to fraction form
    13,589.72/18,745.18 = 9,818.42/x
  3. Step 3: Cross multiply
    13,589.72x = 18,745.18 × 9,818.42
  4. Step 4: Simplify right side
    13,589.72x = 184,048,072.53
  5. Step 5: Solve for x
    x = 184,048,072.53/13,589.72
  6. Step 6: Final answer
    x = 13,543.19

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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.