Home / 13,585.19-18,745.53-7,763.86

Finding the Fourth Proportional to 13,585.19, 18,745.53 and 7,763.86

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Solution

The fourth proportional to 13,585.19, 18,745.53 and 7,763.86 is: 10,712.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.19 : 18,745.53 = 7,763.86 : x
  2. Step 2: Convert to fraction form
    13,585.19/18,745.53 = 7,763.86/x
  3. Step 3: Cross multiply
    13,585.19x = 18,745.53 × 7,763.86
  4. Step 4: Simplify right side
    13,585.19x = 145,537,664.86
  5. Step 5: Solve for x
    x = 145,537,664.86/13,585.19
  6. Step 6: Final answer
    x = 10,712.97

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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.