Home / 25,217.48-34,782.42-21,854.36

Finding the Fourth Proportional to 25,217.48, 34,782.42 and 21,854.36

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Solution

The fourth proportional to 25,217.48, 34,782.42 and 21,854.36 is: 30,143.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,217.48 : 34,782.42 = 21,854.36 : x
  2. Step 2: Convert to fraction form
    25,217.48/34,782.42 = 21,854.36/x
  3. Step 3: Cross multiply
    25,217.48x = 34,782.42 × 21,854.36
  4. Step 4: Simplify right side
    25,217.48x = 760,147,528.35
  5. Step 5: Solve for x
    x = 760,147,528.35/25,217.48
  6. Step 6: Final answer
    x = 30,143.68

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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.