Home / 20,219.63-30,335.41-10,365.81

Finding the Fourth Proportional to 20,219.63, 30,335.41 and 10,365.81

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Solution

The fourth proportional to 20,219.63, 30,335.41 and 10,365.81 is: 15,551.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.63 : 30,335.41 = 10,365.81 : x
  2. Step 2: Convert to fraction form
    20,219.63/30,335.41 = 10,365.81/x
  3. Step 3: Cross multiply
    20,219.63x = 30,335.41 × 10,365.81
  4. Step 4: Simplify right side
    20,219.63x = 314,450,995.53
  5. Step 5: Solve for x
    x = 314,450,995.53/20,219.63
  6. Step 6: Final answer
    x = 15,551.77

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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.