Home / 30,919.20-46,374.48-10,140

Finding the Fourth Proportional to 30,919.20, 46,374.48 and 10,140

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Solution

The fourth proportional to 30,919.20, 46,374.48 and 10,140 is: 15,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,919.20 : 46,374.48 = 10,140 : x
  2. Step 2: Convert to fraction form
    30,919.20/46,374.48 = 10,140/x
  3. Step 3: Cross multiply
    30,919.20x = 46,374.48 × 10,140
  4. Step 4: Simplify right side
    30,919.20x = 470,237,227.20
  5. Step 5: Solve for x
    x = 470,237,227.20/30,919.20
  6. Step 6: Final answer
    x = 15,208.58

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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.