Home / 30,114.99-45,161.55-10,388.66

Finding the Fourth Proportional to 30,114.99, 45,161.55 and 10,388.66

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Solution

The fourth proportional to 30,114.99, 45,161.55 and 10,388.66 is: 15,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,114.99 : 45,161.55 = 10,388.66 : x
  2. Step 2: Convert to fraction form
    30,114.99/45,161.55 = 10,388.66/x
  3. Step 3: Cross multiply
    30,114.99x = 45,161.55 × 10,388.66
  4. Step 4: Simplify right side
    30,114.99x = 469,167,762.22
  5. Step 5: Solve for x
    x = 469,167,762.22/30,114.99
  6. Step 6: Final answer
    x = 15,579.21

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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.