Home / 17,005.70-23,479.53-13,019.78

Finding the Fourth Proportional to 17,005.70, 23,479.53 and 13,019.78

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Solution

The fourth proportional to 17,005.70, 23,479.53 and 13,019.78 is: 17,976.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,005.70 : 23,479.53 = 13,019.78 : x
  2. Step 2: Convert to fraction form
    17,005.70/23,479.53 = 13,019.78/x
  3. Step 3: Cross multiply
    17,005.70x = 23,479.53 × 13,019.78
  4. Step 4: Simplify right side
    17,005.70x = 305,698,315.10
  5. Step 5: Solve for x
    x = 305,698,315.10/17,005.70
  6. Step 6: Final answer
    x = 17,976.23

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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.