Home / 20,994.35-31,417.54-13,100.59

Finding the Fourth Proportional to 20,994.35, 31,417.54 and 13,100.59

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Solution

The fourth proportional to 20,994.35, 31,417.54 and 13,100.59 is: 19,604.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.35 : 31,417.54 = 13,100.59 : x
  2. Step 2: Convert to fraction form
    20,994.35/31,417.54 = 13,100.59/x
  3. Step 3: Cross multiply
    20,994.35x = 31,417.54 × 13,100.59
  4. Step 4: Simplify right side
    20,994.35x = 411,588,126.33
  5. Step 5: Solve for x
    x = 411,588,126.33/20,994.35
  6. Step 6: Final answer
    x = 19,604.71

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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.