Home / 13,590.09-18,745.70-9,818.80

Finding the Fourth Proportional to 13,590.09, 18,745.70 and 9,818.80

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Solution

The fourth proportional to 13,590.09, 18,745.70 and 9,818.80 is: 13,543.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.09 : 18,745.70 = 9,818.80 : x
  2. Step 2: Convert to fraction form
    13,590.09/18,745.70 = 9,818.80/x
  3. Step 3: Cross multiply
    13,590.09x = 18,745.70 × 9,818.80
  4. Step 4: Simplify right side
    13,590.09x = 184,060,183.20
  5. Step 5: Solve for x
    x = 184,060,183.20/13,590.09
  6. Step 6: Final answer
    x = 13,543.71

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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.