Home / 31,115.10-46,653.87-12,398.03

Finding the Fourth Proportional to 31,115.10, 46,653.87 and 12,398.03

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Solution

The fourth proportional to 31,115.10, 46,653.87 and 12,398.03 is: 18,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,115.10 : 46,653.87 = 12,398.03 : x
  2. Step 2: Convert to fraction form
    31,115.10/46,653.87 = 12,398.03/x
  3. Step 3: Cross multiply
    31,115.10x = 46,653.87 × 12,398.03
  4. Step 4: Simplify right side
    31,115.10x = 578,415,846.61
  5. Step 5: Solve for x
    x = 578,415,846.61/31,115.10
  6. Step 6: Final answer
    x = 18,589.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.