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Finding the Fourth Proportional to 12,818.80, 19,228.20 and 10,226.80

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Solution

The fourth proportional to 12,818.80, 19,228.20 and 10,226.80 is: 15,340.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.80 : 19,228.20 = 10,226.80 : x
  2. Step 2: Convert to fraction form
    12,818.80/19,228.20 = 10,226.80/x
  3. Step 3: Cross multiply
    12,818.80x = 19,228.20 × 10,226.80
  4. Step 4: Simplify right side
    12,818.80x = 196,642,955.76
  5. Step 5: Solve for x
    x = 196,642,955.76/12,818.80
  6. Step 6: Final answer
    x = 15,340.20

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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.