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Finding the Fourth Proportional to 12,713.19, 19,070.06 and 8,949.59

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Solution

The fourth proportional to 12,713.19, 19,070.06 and 8,949.59 is: 13,424.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,713.19 : 19,070.06 = 8,949.59 : x
  2. Step 2: Convert to fraction form
    12,713.19/19,070.06 = 8,949.59/x
  3. Step 3: Cross multiply
    12,713.19x = 19,070.06 × 8,949.59
  4. Step 4: Simplify right side
    12,713.19x = 170,669,218.28
  5. Step 5: Solve for x
    x = 170,669,218.28/12,713.19
  6. Step 6: Final answer
    x = 13,424.58

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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.