Home / 30,101.45-45,057.47-20,686.41

Finding the Fourth Proportional to 30,101.45, 45,057.47 and 20,686.41

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Solution

The fourth proportional to 30,101.45, 45,057.47 and 20,686.41 is: 30,964.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,101.45 : 45,057.47 = 20,686.41 : x
  2. Step 2: Convert to fraction form
    30,101.45/45,057.47 = 20,686.41/x
  3. Step 3: Cross multiply
    30,101.45x = 45,057.47 × 20,686.41
  4. Step 4: Simplify right side
    30,101.45x = 932,077,194.55
  5. Step 5: Solve for x
    x = 932,077,194.55/30,101.45
  6. Step 6: Final answer
    x = 30,964.53

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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.