Home / 28,045.78-38,700.48-15,469.72

Finding the Fourth Proportional to 28,045.78, 38,700.48 and 15,469.72

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Solution

The fourth proportional to 28,045.78, 38,700.48 and 15,469.72 is: 21,346.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.78 : 38,700.48 = 15,469.72 : x
  2. Step 2: Convert to fraction form
    28,045.78/38,700.48 = 15,469.72/x
  3. Step 3: Cross multiply
    28,045.78x = 38,700.48 × 15,469.72
  4. Step 4: Simplify right side
    28,045.78x = 598,685,550.73
  5. Step 5: Solve for x
    x = 598,685,550.73/28,045.78
  6. Step 6: Final answer
    x = 21,346.73

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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.