Home / 18,539.28-25,562.63-13,505.78

Finding the Fourth Proportional to 18,539.28, 25,562.63 and 13,505.78

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Solution

The fourth proportional to 18,539.28, 25,562.63 and 13,505.78 is: 18,622.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.28 : 25,562.63 = 13,505.78 : x
  2. Step 2: Convert to fraction form
    18,539.28/25,562.63 = 13,505.78/x
  3. Step 3: Cross multiply
    18,539.28x = 25,562.63 × 13,505.78
  4. Step 4: Simplify right side
    18,539.28x = 345,243,061.66
  5. Step 5: Solve for x
    x = 345,243,061.66/18,539.28
  6. Step 6: Final answer
    x = 18,622.25

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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.