Home / 20,215.56-30,303.90-10,359.48

Finding the Fourth Proportional to 20,215.56, 30,303.90 and 10,359.48

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Solution

The fourth proportional to 20,215.56, 30,303.90 and 10,359.48 is: 15,529.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.56 : 30,303.90 = 10,359.48 : x
  2. Step 2: Convert to fraction form
    20,215.56/30,303.90 = 10,359.48/x
  3. Step 3: Cross multiply
    20,215.56x = 30,303.90 × 10,359.48
  4. Step 4: Simplify right side
    20,215.56x = 313,932,645.97
  5. Step 5: Solve for x
    x = 313,932,645.97/20,215.56
  6. Step 6: Final answer
    x = 15,529.26

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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.