Home / 39,430.80-54,413.78-22,438.42

Finding the Fourth Proportional to 39,430.80, 54,413.78 and 22,438.42

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Solution

The fourth proportional to 39,430.80, 54,413.78 and 22,438.42 is: 30,964.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,430.80 : 54,413.78 = 22,438.42 : x
  2. Step 2: Convert to fraction form
    39,430.80/54,413.78 = 22,438.42/x
  3. Step 3: Cross multiply
    39,430.80x = 54,413.78 × 22,438.42
  4. Step 4: Simplify right side
    39,430.80x = 1,220,959,001.20
  5. Step 5: Solve for x
    x = 1,220,959,001.20/39,430.80
  6. Step 6: Final answer
    x = 30,964.60

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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.