Home / 18,689.04-25,770.78-18,413.28

Finding the Fourth Proportional to 18,689.04, 25,770.78 and 18,413.28

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Solution

The fourth proportional to 18,689.04, 25,770.78 and 18,413.28 is: 25,390.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.04 : 25,770.78 = 18,413.28 : x
  2. Step 2: Convert to fraction form
    18,689.04/25,770.78 = 18,413.28/x
  3. Step 3: Cross multiply
    18,689.04x = 25,770.78 × 18,413.28
  4. Step 4: Simplify right side
    18,689.04x = 474,524,587.96
  5. Step 5: Solve for x
    x = 474,524,587.96/18,689.04
  6. Step 6: Final answer
    x = 25,390.53

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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.