Home / 31,043.74-42,849.44-20,290.18

Finding the Fourth Proportional to 31,043.74, 42,849.44 and 20,290.18

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Solution

The fourth proportional to 31,043.74, 42,849.44 and 20,290.18 is: 28,006.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,043.74 : 42,849.44 = 20,290.18 : x
  2. Step 2: Convert to fraction form
    31,043.74/42,849.44 = 20,290.18/x
  3. Step 3: Cross multiply
    31,043.74x = 42,849.44 × 20,290.18
  4. Step 4: Simplify right side
    31,043.74x = 869,422,850.50
  5. Step 5: Solve for x
    x = 869,422,850.50/31,043.74
  6. Step 6: Final answer
    x = 28,006.38

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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.