Home / 21,149.44-31,728.96-14,578.24

Finding the Fourth Proportional to 21,149.44, 31,728.96 and 14,578.24

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Solution

The fourth proportional to 21,149.44, 31,728.96 and 14,578.24 is: 21,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.44 : 31,728.96 = 14,578.24 : x
  2. Step 2: Convert to fraction form
    21,149.44/31,728.96 = 14,578.24/x
  3. Step 3: Cross multiply
    21,149.44x = 31,728.96 × 14,578.24
  4. Step 4: Simplify right side
    21,149.44x = 462,552,393.83
  5. Step 5: Solve for x
    x = 462,552,393.83/21,149.44
  6. Step 6: Final answer
    x = 21,870.67

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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.