Home / 18,388.55-25,380.73-10,435.56

Finding the Fourth Proportional to 18,388.55, 25,380.73 and 10,435.56

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Solution

The fourth proportional to 18,388.55, 25,380.73 and 10,435.56 is: 14,403.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.55 : 25,380.73 = 10,435.56 : x
  2. Step 2: Convert to fraction form
    18,388.55/25,380.73 = 10,435.56/x
  3. Step 3: Cross multiply
    18,388.55x = 25,380.73 × 10,435.56
  4. Step 4: Simplify right side
    18,388.55x = 264,862,130.76
  5. Step 5: Solve for x
    x = 264,862,130.76/18,388.55
  6. Step 6: Final answer
    x = 14,403.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.