Home / 39,148.80-54,025.07-21,243.35

Finding the Fourth Proportional to 39,148.80, 54,025.07 and 21,243.35

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Solution

The fourth proportional to 39,148.80, 54,025.07 and 21,243.35 is: 29,315.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,148.80 : 54,025.07 = 21,243.35 : x
  2. Step 2: Convert to fraction form
    39,148.80/54,025.07 = 21,243.35/x
  3. Step 3: Cross multiply
    39,148.80x = 54,025.07 × 21,243.35
  4. Step 4: Simplify right side
    39,148.80x = 1,147,673,470.78
  5. Step 5: Solve for x
    x = 1,147,673,470.78/39,148.80
  6. Step 6: Final answer
    x = 29,315.67

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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.