Home / 28,815.70-39,769.57-16,883.79

Finding the Fourth Proportional to 28,815.70, 39,769.57 and 16,883.79

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Solution

The fourth proportional to 28,815.70, 39,769.57 and 16,883.79 is: 23,301.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.70 : 39,769.57 = 16,883.79 : x
  2. Step 2: Convert to fraction form
    28,815.70/39,769.57 = 16,883.79/x
  3. Step 3: Cross multiply
    28,815.70x = 39,769.57 × 16,883.79
  4. Step 4: Simplify right side
    28,815.70x = 671,461,026.06
  5. Step 5: Solve for x
    x = 671,461,026.06/28,815.70
  6. Step 6: Final answer
    x = 23,301.92

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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.