Home / 28,456.41-39,269.99-15,709.36

Finding the Fourth Proportional to 28,456.41, 39,269.99 and 15,709.36

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Solution

The fourth proportional to 28,456.41, 39,269.99 and 15,709.36 is: 21,679.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.41 : 39,269.99 = 15,709.36 : x
  2. Step 2: Convert to fraction form
    28,456.41/39,269.99 = 15,709.36/x
  3. Step 3: Cross multiply
    28,456.41x = 39,269.99 × 15,709.36
  4. Step 4: Simplify right side
    28,456.41x = 616,906,410.11
  5. Step 5: Solve for x
    x = 616,906,410.11/28,456.41
  6. Step 6: Final answer
    x = 21,679.00

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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.