Home / 18,155.30-25,045.29-15,762.02

Finding the Fourth Proportional to 18,155.30, 25,045.29 and 15,762.02

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Solution

The fourth proportional to 18,155.30, 25,045.29 and 15,762.02 is: 21,743.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.30 : 25,045.29 = 15,762.02 : x
  2. Step 2: Convert to fraction form
    18,155.30/25,045.29 = 15,762.02/x
  3. Step 3: Cross multiply
    18,155.30x = 25,045.29 × 15,762.02
  4. Step 4: Simplify right side
    18,155.30x = 394,764,361.89
  5. Step 5: Solve for x
    x = 394,764,361.89/18,155.30
  6. Step 6: Final answer
    x = 21,743.75

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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.