Home / 31,135.92-46,702.26-12,415.20

Finding the Fourth Proportional to 31,135.92, 46,702.26 and 12,415.20

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Solution

The fourth proportional to 31,135.92, 46,702.26 and 12,415.20 is: 18,622.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,135.92 : 46,702.26 = 12,415.20 : x
  2. Step 2: Convert to fraction form
    31,135.92/46,702.26 = 12,415.20/x
  3. Step 3: Cross multiply
    31,135.92x = 46,702.26 × 12,415.20
  4. Step 4: Simplify right side
    31,135.92x = 579,817,898.35
  5. Step 5: Solve for x
    x = 579,817,898.35/31,135.92
  6. Step 6: Final answer
    x = 18,622.15

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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.