Home / 31,135.25-46,702.85-11,415.40

Finding the Fourth Proportional to 31,135.25, 46,702.85 and 11,415.40

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Solution

The fourth proportional to 31,135.25, 46,702.85 and 11,415.40 is: 17,123.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,135.25 : 46,702.85 = 11,415.40 : x
  2. Step 2: Convert to fraction form
    31,135.25/46,702.85 = 11,415.40/x
  3. Step 3: Cross multiply
    31,135.25x = 46,702.85 × 11,415.40
  4. Step 4: Simplify right side
    31,135.25x = 533,131,540.06
  5. Step 5: Solve for x
    x = 533,131,540.06/31,135.25
  6. Step 6: Final answer
    x = 17,123.08

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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.