Home / 31,140.75-42,973.84-16,992.69

Finding the Fourth Proportional to 31,140.75, 42,973.84 and 16,992.69

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Solution

The fourth proportional to 31,140.75, 42,973.84 and 16,992.69 is: 23,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,140.75 : 42,973.84 = 16,992.69 : x
  2. Step 2: Convert to fraction form
    31,140.75/42,973.84 = 16,992.69/x
  3. Step 3: Cross multiply
    31,140.75x = 42,973.84 × 16,992.69
  4. Step 4: Simplify right side
    31,140.75x = 730,241,141.23
  5. Step 5: Solve for x
    x = 730,241,141.23/31,140.75
  6. Step 6: Final answer
    x = 23,449.70

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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.