Home / 30,130.56-45,196.31-11,405.57

Finding the Fourth Proportional to 30,130.56, 45,196.31 and 11,405.57

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Solution

The fourth proportional to 30,130.56, 45,196.31 and 11,405.57 is: 17,108.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,130.56 : 45,196.31 = 11,405.57 : x
  2. Step 2: Convert to fraction form
    30,130.56/45,196.31 = 11,405.57/x
  3. Step 3: Cross multiply
    30,130.56x = 45,196.31 × 11,405.57
  4. Step 4: Simplify right side
    30,130.56x = 515,489,487.70
  5. Step 5: Solve for x
    x = 515,489,487.70/30,130.56
  6. Step 6: Final answer
    x = 17,108.53

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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.