Home / 30,112.56-45,165.60-18,405.36

Finding the Fourth Proportional to 30,112.56, 45,165.60 and 18,405.36

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Solution

The fourth proportional to 30,112.56, 45,165.60 and 18,405.36 is: 27,606.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,112.56 : 45,165.60 = 18,405.36 : x
  2. Step 2: Convert to fraction form
    30,112.56/45,165.60 = 18,405.36/x
  3. Step 3: Cross multiply
    30,112.56x = 45,165.60 × 18,405.36
  4. Step 4: Simplify right side
    30,112.56x = 831,289,127.62
  5. Step 5: Solve for x
    x = 831,289,127.62/30,112.56
  6. Step 6: Final answer
    x = 27,606.06

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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.