Home / 28,064.13-38,728.50-16,128.54

Finding the Fourth Proportional to 28,064.13, 38,728.50 and 16,128.54

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Solution

The fourth proportional to 28,064.13, 38,728.50 and 16,128.54 is: 22,257.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.13 : 38,728.50 = 16,128.54 : x
  2. Step 2: Convert to fraction form
    28,064.13/38,728.50 = 16,128.54/x
  3. Step 3: Cross multiply
    28,064.13x = 38,728.50 × 16,128.54
  4. Step 4: Simplify right side
    28,064.13x = 624,634,161.39
  5. Step 5: Solve for x
    x = 624,634,161.39/28,064.13
  6. Step 6: Final answer
    x = 22,257.39

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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.