Home / 38,790.70-53,526.83-21,791.53

Finding the Fourth Proportional to 38,790.70, 53,526.83 and 21,791.53

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Solution

The fourth proportional to 38,790.70, 53,526.83 and 21,791.53 is: 30,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,790.70 : 53,526.83 = 21,791.53 : x
  2. Step 2: Convert to fraction form
    38,790.70/53,526.83 = 21,791.53/x
  3. Step 3: Cross multiply
    38,790.70x = 53,526.83 × 21,791.53
  4. Step 4: Simplify right side
    38,790.70x = 1,166,431,479.70
  5. Step 5: Solve for x
    x = 1,166,431,479.70/38,790.70
  6. Step 6: Final answer
    x = 30,069.88

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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.