Home / 30,278.81-41,749.02-20,723.31

Finding the Fourth Proportional to 30,278.81, 41,749.02 and 20,723.31

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Solution

The fourth proportional to 30,278.81, 41,749.02 and 20,723.31 is: 28,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.81 : 41,749.02 = 20,723.31 : x
  2. Step 2: Convert to fraction form
    30,278.81/41,749.02 = 20,723.31/x
  3. Step 3: Cross multiply
    30,278.81x = 41,749.02 × 20,723.31
  4. Step 4: Simplify right side
    30,278.81x = 865,177,883.66
  5. Step 5: Solve for x
    x = 865,177,883.66/30,278.81
  6. Step 6: Final answer
    x = 28,573.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.