Home / 30,677.55-45,969.35-20,645.11

Finding the Fourth Proportional to 30,677.55, 45,969.35 and 20,645.11

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Solution

The fourth proportional to 30,677.55, 45,969.35 and 20,645.11 is: 30,936.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,677.55 : 45,969.35 = 20,645.11 : x
  2. Step 2: Convert to fraction form
    30,677.55/45,969.35 = 20,645.11/x
  3. Step 3: Cross multiply
    30,677.55x = 45,969.35 × 20,645.11
  4. Step 4: Simplify right side
    30,677.55x = 949,042,287.38
  5. Step 5: Solve for x
    x = 949,042,287.38/30,677.55
  6. Step 6: Final answer
    x = 30,936.05

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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.