Home / 13,718.15-20,577.98-3,856.65

Finding the Fourth Proportional to 13,718.15, 20,577.98 and 3,856.65

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Solution

The fourth proportional to 13,718.15, 20,577.98 and 3,856.65 is: 5,785.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.15 : 20,577.98 = 3,856.65 : x
  2. Step 2: Convert to fraction form
    13,718.15/20,577.98 = 3,856.65/x
  3. Step 3: Cross multiply
    13,718.15x = 20,577.98 × 3,856.65
  4. Step 4: Simplify right side
    13,718.15x = 79,362,047.28
  5. Step 5: Solve for x
    x = 79,362,047.28/13,718.15
  6. Step 6: Final answer
    x = 5,785.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.