Home / 12,562.36-18,847.85-7,876.72

Finding the Fourth Proportional to 12,562.36, 18,847.85 and 7,876.72

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Solution

The fourth proportional to 12,562.36, 18,847.85 and 7,876.72 is: 11,817.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,562.36 : 18,847.85 = 7,876.72 : x
  2. Step 2: Convert to fraction form
    12,562.36/18,847.85 = 7,876.72/x
  3. Step 3: Cross multiply
    12,562.36x = 18,847.85 × 7,876.72
  4. Step 4: Simplify right side
    12,562.36x = 148,459,103.43
  5. Step 5: Solve for x
    x = 148,459,103.43/12,562.36
  6. Step 6: Final answer
    x = 11,817.77

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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.