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Finding the Fourth Proportional to 12,576.95, 18,868.46 and 8,886.36

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Solution

The fourth proportional to 12,576.95, 18,868.46 and 8,886.36 is: 13,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.95 : 18,868.46 = 8,886.36 : x
  2. Step 2: Convert to fraction form
    12,576.95/18,868.46 = 8,886.36/x
  3. Step 3: Cross multiply
    12,576.95x = 18,868.46 × 8,886.36
  4. Step 4: Simplify right side
    12,576.95x = 167,671,883.77
  5. Step 5: Solve for x
    x = 167,671,883.77/12,576.95
  6. Step 6: Final answer
    x = 13,331.69

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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.