Home / 21,263.53-31,879.67-7,219.79

Finding the Fourth Proportional to 21,263.53, 31,879.67 and 7,219.79

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Solution

The fourth proportional to 21,263.53, 31,879.67 and 7,219.79 is: 10,824.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.53 : 31,879.67 = 7,219.79 : x
  2. Step 2: Convert to fraction form
    21,263.53/31,879.67 = 7,219.79/x
  3. Step 3: Cross multiply
    21,263.53x = 31,879.67 × 7,219.79
  4. Step 4: Simplify right side
    21,263.53x = 230,164,543.68
  5. Step 5: Solve for x
    x = 230,164,543.68/21,263.53
  6. Step 6: Final answer
    x = 10,824.38

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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.