Home / 30,139.05-45,181.95-11,406.09

Finding the Fourth Proportional to 30,139.05, 45,181.95 and 11,406.09

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Solution

The fourth proportional to 30,139.05, 45,181.95 and 11,406.09 is: 17,099.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.05 : 45,181.95 = 11,406.09 : x
  2. Step 2: Convert to fraction form
    30,139.05/45,181.95 = 11,406.09/x
  3. Step 3: Cross multiply
    30,139.05x = 45,181.95 × 11,406.09
  4. Step 4: Simplify right side
    30,139.05x = 515,349,388.08
  5. Step 5: Solve for x
    x = 515,349,388.08/30,139.05
  6. Step 6: Final answer
    x = 17,099.06

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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.