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Finding the Fourth Proportional to 12,695.51, 19,043.06 and 3,461.51

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Solution

The fourth proportional to 12,695.51, 19,043.06 and 3,461.51 is: 5,192.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,695.51 : 19,043.06 = 3,461.51 : x
  2. Step 2: Convert to fraction form
    12,695.51/19,043.06 = 3,461.51/x
  3. Step 3: Cross multiply
    12,695.51x = 19,043.06 × 3,461.51
  4. Step 4: Simplify right side
    12,695.51x = 65,917,742.62
  5. Step 5: Solve for x
    x = 65,917,742.62/12,695.51
  6. Step 6: Final answer
    x = 5,192.21

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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.