Home / 19,991.41-30,014.75-10,137.56

Finding the Fourth Proportional to 19,991.41, 30,014.75 and 10,137.56

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Solution

The fourth proportional to 19,991.41, 30,014.75 and 10,137.56 is: 15,220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.41 : 30,014.75 = 10,137.56 : x
  2. Step 2: Convert to fraction form
    19,991.41/30,014.75 = 10,137.56/x
  3. Step 3: Cross multiply
    19,991.41x = 30,014.75 × 10,137.56
  4. Step 4: Simplify right side
    19,991.41x = 304,276,204.28
  5. Step 5: Solve for x
    x = 304,276,204.28/19,991.41
  6. Step 6: Final answer
    x = 15,220.35

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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.