Home / 30,157.80-45,214.83-20,272.56

Finding the Fourth Proportional to 30,157.80, 45,214.83 and 20,272.56

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Solution

The fourth proportional to 30,157.80, 45,214.83 and 20,272.56 is: 30,394.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,157.80 : 45,214.83 = 20,272.56 : x
  2. Step 2: Convert to fraction form
    30,157.80/45,214.83 = 20,272.56/x
  3. Step 3: Cross multiply
    30,157.80x = 45,214.83 × 20,272.56
  4. Step 4: Simplify right side
    30,157.80x = 916,620,354.06
  5. Step 5: Solve for x
    x = 916,620,354.06/30,157.80
  6. Step 6: Final answer
    x = 30,394.14

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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.