Home / 21,255.03-31,894.65-20,114.91

Finding the Fourth Proportional to 21,255.03, 31,894.65 and 20,114.91

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Solution

The fourth proportional to 21,255.03, 31,894.65 and 20,114.91 is: 30,183.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.03 : 31,894.65 = 20,114.91 : x
  2. Step 2: Convert to fraction form
    21,255.03/31,894.65 = 20,114.91/x
  3. Step 3: Cross multiply
    21,255.03x = 31,894.65 × 20,114.91
  4. Step 4: Simplify right side
    21,255.03x = 641,558,014.23
  5. Step 5: Solve for x
    x = 641,558,014.23/21,255.03
  6. Step 6: Final answer
    x = 30,183.82

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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.