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Finding the Fourth Proportional to 12,676.67, 18,999.93 and 5,913.17

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Solution

The fourth proportional to 12,676.67, 18,999.93 and 5,913.17 is: 8,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676.67 : 18,999.93 = 5,913.17 : x
  2. Step 2: Convert to fraction form
    12,676.67/18,999.93 = 5,913.17/x
  3. Step 3: Cross multiply
    12,676.67x = 18,999.93 × 5,913.17
  4. Step 4: Simplify right side
    12,676.67x = 112,349,816.08
  5. Step 5: Solve for x
    x = 112,349,816.08/12,676.67
  6. Step 6: Final answer
    x = 8,862.72

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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.