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Finding the Fourth Proportional to 12,885.68, 19,335.95 and 6,962.58

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Solution

The fourth proportional to 12,885.68, 19,335.95 and 6,962.58 is: 10,447.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.68 : 19,335.95 = 6,962.58 : x
  2. Step 2: Convert to fraction form
    12,885.68/19,335.95 = 6,962.58/x
  3. Step 3: Cross multiply
    12,885.68x = 19,335.95 × 6,962.58
  4. Step 4: Simplify right side
    12,885.68x = 134,628,098.75
  5. Step 5: Solve for x
    x = 134,628,098.75/12,885.68
  6. Step 6: Final answer
    x = 10,447.88

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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.