Home / 31,007.75-42,790.48-16,860.60

Finding the Fourth Proportional to 31,007.75, 42,790.48 and 16,860.60

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Solution

The fourth proportional to 31,007.75, 42,790.48 and 16,860.60 is: 23,267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,007.75 : 42,790.48 = 16,860.60 : x
  2. Step 2: Convert to fraction form
    31,007.75/42,790.48 = 16,860.60/x
  3. Step 3: Cross multiply
    31,007.75x = 42,790.48 × 16,860.60
  4. Step 4: Simplify right side
    31,007.75x = 721,473,124.94
  5. Step 5: Solve for x
    x = 721,473,124.94/31,007.75
  6. Step 6: Final answer
    x = 23,267.51

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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.