Home / 13,145.39-19,717.71-3,785.45

Finding the Fourth Proportional to 13,145.39, 19,717.71 and 3,785.45

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Solution

The fourth proportional to 13,145.39, 19,717.71 and 3,785.45 is: 5,678.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.39 : 19,717.71 = 3,785.45 : x
  2. Step 2: Convert to fraction form
    13,145.39/19,717.71 = 3,785.45/x
  3. Step 3: Cross multiply
    13,145.39x = 19,717.71 × 3,785.45
  4. Step 4: Simplify right side
    13,145.39x = 74,640,405.32
  5. Step 5: Solve for x
    x = 74,640,405.32/13,145.39
  6. Step 6: Final answer
    x = 5,678.07

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1.5x scale

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.