Home / 27,898.73-38,515.25-21,511.31

Finding the Fourth Proportional to 27,898.73, 38,515.25 and 21,511.31

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Solution

The fourth proportional to 27,898.73, 38,515.25 and 21,511.31 is: 29,697.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,898.73 : 38,515.25 = 21,511.31 : x
  2. Step 2: Convert to fraction form
    27,898.73/38,515.25 = 21,511.31/x
  3. Step 3: Cross multiply
    27,898.73x = 38,515.25 × 21,511.31
  4. Step 4: Simplify right side
    27,898.73x = 828,513,632.54
  5. Step 5: Solve for x
    x = 828,513,632.54/27,898.73
  6. Step 6: Final answer
    x = 29,697.19

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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.