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Finding the Fourth Proportional to 12,648.84, 17,455.31 and 6,983.58

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Solution

The fourth proportional to 12,648.84, 17,455.31 and 6,983.58 is: 9,637.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.84 : 17,455.31 = 6,983.58 : x
  2. Step 2: Convert to fraction form
    12,648.84/17,455.31 = 6,983.58/x
  3. Step 3: Cross multiply
    12,648.84x = 17,455.31 × 6,983.58
  4. Step 4: Simplify right side
    12,648.84x = 121,900,518.89
  5. Step 5: Solve for x
    x = 121,900,518.89/12,648.84
  6. Step 6: Final answer
    x = 9,637.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.