Home / 20,860.32-31,235.78-14,299.32

Finding the Fourth Proportional to 20,860.32, 31,235.78 and 14,299.32

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Solution

The fourth proportional to 20,860.32, 31,235.78 and 14,299.32 is: 21,411.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.32 : 31,235.78 = 14,299.32 : x
  2. Step 2: Convert to fraction form
    20,860.32/31,235.78 = 14,299.32/x
  3. Step 3: Cross multiply
    20,860.32x = 31,235.78 × 14,299.32
  4. Step 4: Simplify right side
    20,860.32x = 446,650,413.67
  5. Step 5: Solve for x
    x = 446,650,413.67/20,860.32
  6. Step 6: Final answer
    x = 21,411.48

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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.