Home / 12,889.89-19,319.85-10,553.85

Finding the Fourth Proportional to 12,889.89, 19,319.85 and 10,553.85

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Solution

The fourth proportional to 12,889.89, 19,319.85 and 10,553.85 is: 15,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.89 : 19,319.85 = 10,553.85 : x
  2. Step 2: Convert to fraction form
    12,889.89/19,319.85 = 10,553.85/x
  3. Step 3: Cross multiply
    12,889.89x = 19,319.85 × 10,553.85
  4. Step 4: Simplify right side
    12,889.89x = 203,898,798.92
  5. Step 5: Solve for x
    x = 203,898,798.92/12,889.89
  6. Step 6: Final answer
    x = 15,818.51

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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.