Home / 30,261.40-45,359.70-13,618.60

Finding the Fourth Proportional to 30,261.40, 45,359.70 and 13,618.60

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Solution

The fourth proportional to 30,261.40, 45,359.70 and 13,618.60 is: 20,413.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,261.40 : 45,359.70 = 13,618.60 : x
  2. Step 2: Convert to fraction form
    30,261.40/45,359.70 = 13,618.60/x
  3. Step 3: Cross multiply
    30,261.40x = 45,359.70 × 13,618.60
  4. Step 4: Simplify right side
    30,261.40x = 617,735,610.42
  5. Step 5: Solve for x
    x = 617,735,610.42/30,261.40
  6. Step 6: Final answer
    x = 20,413.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.