Home / 28,149.93-38,846.30-15,403.06

Finding the Fourth Proportional to 28,149.93, 38,846.30 and 15,403.06

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Solution

The fourth proportional to 28,149.93, 38,846.30 and 15,403.06 is: 21,255.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.93 : 38,846.30 = 15,403.06 : x
  2. Step 2: Convert to fraction form
    28,149.93/38,846.30 = 15,403.06/x
  3. Step 3: Cross multiply
    28,149.93x = 38,846.30 × 15,403.06
  4. Step 4: Simplify right side
    28,149.93x = 598,351,792.56
  5. Step 5: Solve for x
    x = 598,351,792.56/28,149.93
  6. Step 6: Final answer
    x = 21,255.89

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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.