Home / 30,406.35-45,707.60-28,195.43

Finding the Fourth Proportional to 30,406.35, 45,707.60 and 28,195.43

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Solution

The fourth proportional to 30,406.35, 45,707.60 and 28,195.43 is: 42,384.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,406.35 : 45,707.60 = 28,195.43 : x
  2. Step 2: Convert to fraction form
    30,406.35/45,707.60 = 28,195.43/x
  3. Step 3: Cross multiply
    30,406.35x = 45,707.60 × 28,195.43
  4. Step 4: Simplify right side
    30,406.35x = 1,288,745,066.75
  5. Step 5: Solve for x
    x = 1,288,745,066.75/30,406.35
  6. Step 6: Final answer
    x = 42,384.08

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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.