Home / 30,316.16-45,474.54-18,921.56

Finding the Fourth Proportional to 30,316.16, 45,474.54 and 18,921.56

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Solution

The fourth proportional to 30,316.16, 45,474.54 and 18,921.56 is: 28,382.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,316.16 : 45,474.54 = 18,921.56 : x
  2. Step 2: Convert to fraction form
    30,316.16/45,474.54 = 18,921.56/x
  3. Step 3: Cross multiply
    30,316.16x = 45,474.54 × 18,921.56
  4. Step 4: Simplify right side
    30,316.16x = 860,449,237.08
  5. Step 5: Solve for x
    x = 860,449,237.08/30,316.16
  6. Step 6: Final answer
    x = 28,382.53

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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.