Home / 30,120.46-45,185.85-10,394.39

Finding the Fourth Proportional to 30,120.46, 45,185.85 and 10,394.39

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Solution

The fourth proportional to 30,120.46, 45,185.85 and 10,394.39 is: 15,593.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.46 : 45,185.85 = 10,394.39 : x
  2. Step 2: Convert to fraction form
    30,120.46/45,185.85 = 10,394.39/x
  3. Step 3: Cross multiply
    30,120.46x = 45,185.85 × 10,394.39
  4. Step 4: Simplify right side
    30,120.46x = 469,679,460.35
  5. Step 5: Solve for x
    x = 469,679,460.35/30,120.46
  6. Step 6: Final answer
    x = 15,593.37

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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.