Home / 25,867.20-38,743.20-21,259.20

Finding the Fourth Proportional to 25,867.20, 38,743.20 and 21,259.20

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Solution

The fourth proportional to 25,867.20, 38,743.20 and 21,259.20 is: 31,841.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,867.20 : 38,743.20 = 21,259.20 : x
  2. Step 2: Convert to fraction form
    25,867.20/38,743.20 = 21,259.20/x
  3. Step 3: Cross multiply
    25,867.20x = 38,743.20 × 21,259.20
  4. Step 4: Simplify right side
    25,867.20x = 823,649,437.44
  5. Step 5: Solve for x
    x = 823,649,437.44/25,867.20
  6. Step 6: Final answer
    x = 31,841.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.