Home / 30,236.58-45,378.48-20,941.74

Finding the Fourth Proportional to 30,236.58, 45,378.48 and 20,941.74

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Solution

The fourth proportional to 30,236.58, 45,378.48 and 20,941.74 is: 31,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,236.58 : 45,378.48 = 20,941.74 : x
  2. Step 2: Convert to fraction form
    30,236.58/45,378.48 = 20,941.74/x
  3. Step 3: Cross multiply
    30,236.58x = 45,378.48 × 20,941.74
  4. Step 4: Simplify right side
    30,236.58x = 950,304,329.76
  5. Step 5: Solve for x
    x = 950,304,329.76/30,236.58
  6. Step 6: Final answer
    x = 31,428.96

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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.