Home / 18,387.30-25,374.58-10,003.86

Finding the Fourth Proportional to 18,387.30, 25,374.58 and 10,003.86

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Solution

The fourth proportional to 18,387.30, 25,374.58 and 10,003.86 is: 13,805.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.30 : 25,374.58 = 10,003.86 : x
  2. Step 2: Convert to fraction form
    18,387.30/25,374.58 = 10,003.86/x
  3. Step 3: Cross multiply
    18,387.30x = 25,374.58 × 10,003.86
  4. Step 4: Simplify right side
    18,387.30x = 253,843,619.01
  5. Step 5: Solve for x
    x = 253,843,619.01/18,387.30
  6. Step 6: Final answer
    x = 13,805.38

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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.