Home / 30,132.55-45,199.18-11,407.56

Finding the Fourth Proportional to 30,132.55, 45,199.18 and 11,407.56

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Solution

The fourth proportional to 30,132.55, 45,199.18 and 11,407.56 is: 17,111.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,132.55 : 45,199.18 = 11,407.56 : x
  2. Step 2: Convert to fraction form
    30,132.55/45,199.18 = 11,407.56/x
  3. Step 3: Cross multiply
    30,132.55x = 45,199.18 × 11,407.56
  4. Step 4: Simplify right side
    30,132.55x = 515,612,202.56
  5. Step 5: Solve for x
    x = 515,612,202.56/30,132.55
  6. Step 6: Final answer
    x = 17,111.47

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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.