Home / 31,125.08-46,676.15-11,129.18

Finding the Fourth Proportional to 31,125.08, 46,676.15 and 11,129.18

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Solution

The fourth proportional to 31,125.08, 46,676.15 and 11,129.18 is: 16,689.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,125.08 : 46,676.15 = 11,129.18 : x
  2. Step 2: Convert to fraction form
    31,125.08/46,676.15 = 11,129.18/x
  3. Step 3: Cross multiply
    31,125.08x = 46,676.15 × 11,129.18
  4. Step 4: Simplify right side
    31,125.08x = 519,466,986.03
  5. Step 5: Solve for x
    x = 519,466,986.03/31,125.08
  6. Step 6: Final answer
    x = 16,689.66

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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.