Home / 15,783.74-21,772.37-10,116.48

Finding the Fourth Proportional to 15,783.74, 21,772.37 and 10,116.48

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Solution

The fourth proportional to 15,783.74, 21,772.37 and 10,116.48 is: 13,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,783.74 : 21,772.37 = 10,116.48 : x
  2. Step 2: Convert to fraction form
    15,783.74/21,772.37 = 10,116.48/x
  3. Step 3: Cross multiply
    15,783.74x = 21,772.37 × 10,116.48
  4. Step 4: Simplify right side
    15,783.74x = 220,259,745.66
  5. Step 5: Solve for x
    x = 220,259,745.66/15,783.74
  6. Step 6: Final answer
    x = 13,954.85

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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.