Home / 20,169.36-30,260.18-10,315.56

Finding the Fourth Proportional to 20,169.36, 30,260.18 and 10,315.56

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Solution

The fourth proportional to 20,169.36, 30,260.18 and 10,315.56 is: 15,476.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.36 : 30,260.18 = 10,315.56 : x
  2. Step 2: Convert to fraction form
    20,169.36/30,260.18 = 10,315.56/x
  3. Step 3: Cross multiply
    20,169.36x = 30,260.18 × 10,315.56
  4. Step 4: Simplify right side
    20,169.36x = 312,150,702.40
  5. Step 5: Solve for x
    x = 312,150,702.40/20,169.36
  6. Step 6: Final answer
    x = 15,476.48

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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.