Home / 31,178.13-46,787.71-13,647.97

Finding the Fourth Proportional to 31,178.13, 46,787.71 and 13,647.97

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Solution

The fourth proportional to 31,178.13, 46,787.71 and 13,647.97 is: 20,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,178.13 : 46,787.71 = 13,647.97 : x
  2. Step 2: Convert to fraction form
    31,178.13/46,787.71 = 13,647.97/x
  3. Step 3: Cross multiply
    31,178.13x = 46,787.71 × 13,647.97
  4. Step 4: Simplify right side
    31,178.13x = 638,557,262.45
  5. Step 5: Solve for x
    x = 638,557,262.45/31,178.13
  6. Step 6: Final answer
    x = 20,480.94

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1.5x scale

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.