Home / 12,887.50-19,328.21-7,267.58

Finding the Fourth Proportional to 12,887.50, 19,328.21 and 7,267.58

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Solution

The fourth proportional to 12,887.50, 19,328.21 and 7,267.58 is: 10,899.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.50 : 19,328.21 = 7,267.58 : x
  2. Step 2: Convert to fraction form
    12,887.50/19,328.21 = 7,267.58/x
  3. Step 3: Cross multiply
    12,887.50x = 19,328.21 × 7,267.58
  4. Step 4: Simplify right side
    12,887.50x = 140,469,378.92
  5. Step 5: Solve for x
    x = 140,469,378.92/12,887.50
  6. Step 6: Final answer
    x = 10,899.66

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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.