Home / 39,217.34-54,121.30-21,313.70

Finding the Fourth Proportional to 39,217.34, 54,121.30 and 21,313.70

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Solution

The fourth proportional to 39,217.34, 54,121.30 and 21,313.70 is: 29,413.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,217.34 : 54,121.30 = 21,313.70 : x
  2. Step 2: Convert to fraction form
    39,217.34/54,121.30 = 21,313.70/x
  3. Step 3: Cross multiply
    39,217.34x = 54,121.30 × 21,313.70
  4. Step 4: Simplify right side
    39,217.34x = 1,153,525,151.81
  5. Step 5: Solve for x
    x = 1,153,525,151.81/39,217.34
  6. Step 6: Final answer
    x = 29,413.65

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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.