Home / 30,212.55-45,323.43-15,413.40

Finding the Fourth Proportional to 30,212.55, 45,323.43 and 15,413.40

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Solution

The fourth proportional to 30,212.55, 45,323.43 and 15,413.40 is: 23,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,212.55 : 45,323.43 = 15,413.40 : x
  2. Step 2: Convert to fraction form
    30,212.55/45,323.43 = 15,413.40/x
  3. Step 3: Cross multiply
    30,212.55x = 45,323.43 × 15,413.40
  4. Step 4: Simplify right side
    30,212.55x = 698,588,155.96
  5. Step 5: Solve for x
    x = 698,588,155.96/30,212.55
  6. Step 6: Final answer
    x = 23,122.45

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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.