Home / 30,112.12-45,171.25-10,390.62

Finding the Fourth Proportional to 30,112.12, 45,171.25 and 10,390.62

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Solution

The fourth proportional to 30,112.12, 45,171.25 and 10,390.62 is: 15,586.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,112.12 : 45,171.25 = 10,390.62 : x
  2. Step 2: Convert to fraction form
    30,112.12/45,171.25 = 10,390.62/x
  3. Step 3: Cross multiply
    30,112.12x = 45,171.25 × 10,390.62
  4. Step 4: Simplify right side
    30,112.12x = 469,357,067.82
  5. Step 5: Solve for x
    x = 469,357,067.82/30,112.12
  6. Step 6: Final answer
    x = 15,586.98

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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.