Home / 31,143.95-46,687.15-12,419.44

Finding the Fourth Proportional to 31,143.95, 46,687.15 and 12,419.44

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Solution

The fourth proportional to 31,143.95, 46,687.15 and 12,419.44 is: 18,617.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,143.95 : 46,687.15 = 12,419.44 : x
  2. Step 2: Convert to fraction form
    31,143.95/46,687.15 = 12,419.44/x
  3. Step 3: Cross multiply
    31,143.95x = 46,687.15 × 12,419.44
  4. Step 4: Simplify right side
    31,143.95x = 579,828,157.00
  5. Step 5: Solve for x
    x = 579,828,157.00/31,143.95
  6. Step 6: Final answer
    x = 18,617.68

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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.