Home / 18,387.86-25,374.49-10,429.91

Finding the Fourth Proportional to 18,387.86, 25,374.49 and 10,429.91

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Solution

The fourth proportional to 18,387.86, 25,374.49 and 10,429.91 is: 14,392.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.86 : 25,374.49 = 10,429.91 : x
  2. Step 2: Convert to fraction form
    18,387.86/25,374.49 = 10,429.91/x
  3. Step 3: Cross multiply
    18,387.86x = 25,374.49 × 10,429.91
  4. Step 4: Simplify right side
    18,387.86x = 264,653,494.05
  5. Step 5: Solve for x
    x = 264,653,494.05/18,387.86
  6. Step 6: Final answer
    x = 14,392.84

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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.