Home / 31,413.12-47,107.62-12,686.64

Finding the Fourth Proportional to 31,413.12, 47,107.62 and 12,686.64

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Solution

The fourth proportional to 31,413.12, 47,107.62 and 12,686.64 is: 19,025.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,413.12 : 47,107.62 = 12,686.64 : x
  2. Step 2: Convert to fraction form
    31,413.12/47,107.62 = 12,686.64/x
  3. Step 3: Cross multiply
    31,413.12x = 47,107.62 × 12,686.64
  4. Step 4: Simplify right side
    31,413.12x = 597,637,416.20
  5. Step 5: Solve for x
    x = 597,637,416.20/31,413.12
  6. Step 6: Final answer
    x = 19,025.09

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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.