Home / 13,145.16-19,718.10-3,785.88

Finding the Fourth Proportional to 13,145.16, 19,718.10 and 3,785.88

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Solution

The fourth proportional to 13,145.16, 19,718.10 and 3,785.88 is: 5,678.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.16 : 19,718.10 = 3,785.88 : x
  2. Step 2: Convert to fraction form
    13,145.16/19,718.10 = 3,785.88/x
  3. Step 3: Cross multiply
    13,145.16x = 19,718.10 × 3,785.88
  4. Step 4: Simplify right side
    13,145.16x = 74,650,360.43
  5. Step 5: Solve for x
    x = 74,650,360.43/13,145.16
  6. Step 6: Final answer
    x = 5,678.92

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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.