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Finding the Fourth Proportional to 12,866.76, 19,300.10 and 8,452.28

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Solution

The fourth proportional to 12,866.76, 19,300.10 and 8,452.28 is: 12,678.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.76 : 19,300.10 = 8,452.28 : x
  2. Step 2: Convert to fraction form
    12,866.76/19,300.10 = 8,452.28/x
  3. Step 3: Cross multiply
    12,866.76x = 19,300.10 × 8,452.28
  4. Step 4: Simplify right side
    12,866.76x = 163,129,855.22
  5. Step 5: Solve for x
    x = 163,129,855.22/12,866.76
  6. Step 6: Final answer
    x = 12,678.39

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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.