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Finding the Fourth Proportional to 13,181.71, 19,752.99 and 12,855.73

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Solution

The fourth proportional to 13,181.71, 19,752.99 and 12,855.73 is: 19,264.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.71 : 19,752.99 = 12,855.73 : x
  2. Step 2: Convert to fraction form
    13,181.71/19,752.99 = 12,855.73/x
  3. Step 3: Cross multiply
    13,181.71x = 19,752.99 × 12,855.73
  4. Step 4: Simplify right side
    13,181.71x = 253,939,106.13
  5. Step 5: Solve for x
    x = 253,939,106.13/13,181.71
  6. Step 6: Final answer
    x = 19,264.50

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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.