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Finding the Fourth Proportional to 12,818.95, 19,216.96 and 6,898.99

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Solution

The fourth proportional to 12,818.95, 19,216.96 and 6,898.99 is: 10,342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.95 : 19,216.96 = 6,898.99 : x
  2. Step 2: Convert to fraction form
    12,818.95/19,216.96 = 6,898.99/x
  3. Step 3: Cross multiply
    12,818.95x = 19,216.96 × 6,898.99
  4. Step 4: Simplify right side
    12,818.95x = 132,577,614.87
  5. Step 5: Solve for x
    x = 132,577,614.87/12,818.95
  6. Step 6: Final answer
    x = 10,342.31

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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.