Home / 30,120.19-41,513.94-20,030.58

Finding the Fourth Proportional to 30,120.19, 41,513.94 and 20,030.58

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Solution

The fourth proportional to 30,120.19, 41,513.94 and 20,030.58 is: 27,607.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.19 : 41,513.94 = 20,030.58 : x
  2. Step 2: Convert to fraction form
    30,120.19/41,513.94 = 20,030.58/x
  3. Step 3: Cross multiply
    30,120.19x = 41,513.94 × 20,030.58
  4. Step 4: Simplify right side
    30,120.19x = 831,548,296.29
  5. Step 5: Solve for x
    x = 831,548,296.29/30,120.19
  6. Step 6: Final answer
    x = 27,607.67

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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.