Home / 21,219.24-31,828.86-9,531.56

Finding the Fourth Proportional to 21,219.24, 31,828.86 and 9,531.56

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Solution

The fourth proportional to 21,219.24, 31,828.86 and 9,531.56 is: 14,297.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.24 : 31,828.86 = 9,531.56 : x
  2. Step 2: Convert to fraction form
    21,219.24/31,828.86 = 9,531.56/x
  3. Step 3: Cross multiply
    21,219.24x = 31,828.86 × 9,531.56
  4. Step 4: Simplify right side
    21,219.24x = 303,378,688.82
  5. Step 5: Solve for x
    x = 303,378,688.82/21,219.24
  6. Step 6: Final answer
    x = 14,297.34

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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.