Home / 18,413.21-25,410.40-10,455.60

Finding the Fourth Proportional to 18,413.21, 25,410.40 and 10,455.60

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Solution

The fourth proportional to 18,413.21, 25,410.40 and 10,455.60 is: 14,428.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.21 : 25,410.40 = 10,455.60 : x
  2. Step 2: Convert to fraction form
    18,413.21/25,410.40 = 10,455.60/x
  3. Step 3: Cross multiply
    18,413.21x = 25,410.40 × 10,455.60
  4. Step 4: Simplify right side
    18,413.21x = 265,680,978.24
  5. Step 5: Solve for x
    x = 265,680,978.24/18,413.21
  6. Step 6: Final answer
    x = 14,428.82

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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.