Home / 18,387.42-25,374.75-10,003.98

Finding the Fourth Proportional to 18,387.42, 25,374.75 and 10,003.98

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Solution

The fourth proportional to 18,387.42, 25,374.75 and 10,003.98 is: 13,805.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.42 : 25,374.75 = 10,003.98 : x
  2. Step 2: Convert to fraction form
    18,387.42/25,374.75 = 10,003.98/x
  3. Step 3: Cross multiply
    18,387.42x = 25,374.75 × 10,003.98
  4. Step 4: Simplify right side
    18,387.42x = 253,848,491.51
  5. Step 5: Solve for x
    x = 253,848,491.51/18,387.42
  6. Step 6: Final answer
    x = 13,805.55

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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.