Home / 12,798.20-19,218.12-7,898.96

Finding the Fourth Proportional to 12,798.20, 19,218.12 and 7,898.96

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Solution

The fourth proportional to 12,798.20, 19,218.12 and 7,898.96 is: 11,861.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.20 : 19,218.12 = 7,898.96 : x
  2. Step 2: Convert to fraction form
    12,798.20/19,218.12 = 7,898.96/x
  3. Step 3: Cross multiply
    12,798.20x = 19,218.12 × 7,898.96
  4. Step 4: Simplify right side
    12,798.20x = 151,803,161.16
  5. Step 5: Solve for x
    x = 151,803,161.16/12,798.20
  6. Step 6: Final answer
    x = 11,861.29

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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.