Home / 30,488.04-42,049.80-20,413.26

Finding the Fourth Proportional to 30,488.04, 42,049.80 and 20,413.26

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Solution

The fourth proportional to 30,488.04, 42,049.80 and 20,413.26 is: 28,154.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,488.04 : 42,049.80 = 20,413.26 : x
  2. Step 2: Convert to fraction form
    30,488.04/42,049.80 = 20,413.26/x
  3. Step 3: Cross multiply
    30,488.04x = 42,049.80 × 20,413.26
  4. Step 4: Simplify right side
    30,488.04x = 858,373,500.35
  5. Step 5: Solve for x
    x = 858,373,500.35/30,488.04
  6. Step 6: Final answer
    x = 28,154.43

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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.