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Finding the Fourth Proportional to 12,360.66, 17,059.95 and 7,885.80

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Solution

The fourth proportional to 12,360.66, 17,059.95 and 7,885.80 is: 10,883.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,360.66 : 17,059.95 = 7,885.80 : x
  2. Step 2: Convert to fraction form
    12,360.66/17,059.95 = 7,885.80/x
  3. Step 3: Cross multiply
    12,360.66x = 17,059.95 × 7,885.80
  4. Step 4: Simplify right side
    12,360.66x = 134,531,353.71
  5. Step 5: Solve for x
    x = 134,531,353.71/12,360.66
  6. Step 6: Final answer
    x = 10,883.83

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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.