Home / 38,555.38-53,205.34-21,559.66

Finding the Fourth Proportional to 38,555.38, 53,205.34 and 21,559.66

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Solution

The fourth proportional to 38,555.38, 53,205.34 and 21,559.66 is: 29,751.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,555.38 : 53,205.34 = 21,559.66 : x
  2. Step 2: Convert to fraction form
    38,555.38/53,205.34 = 21,559.66/x
  3. Step 3: Cross multiply
    38,555.38x = 53,205.34 × 21,559.66
  4. Step 4: Simplify right side
    38,555.38x = 1,147,089,040.58
  5. Step 5: Solve for x
    x = 1,147,089,040.58/38,555.38
  6. Step 6: Final answer
    x = 29,751.72

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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.