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Finding the Fourth Proportional to 10,431.98, 15,648.06 and 8,346.82

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Solution

The fourth proportional to 10,431.98, 15,648.06 and 8,346.82 is: 12,520.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.98 : 15,648.06 = 8,346.82 : x
  2. Step 2: Convert to fraction form
    10,431.98/15,648.06 = 8,346.82/x
  3. Step 3: Cross multiply
    10,431.98x = 15,648.06 × 8,346.82
  4. Step 4: Simplify right side
    10,431.98x = 130,611,461.93
  5. Step 5: Solve for x
    x = 130,611,461.93/10,431.98
  6. Step 6: Final answer
    x = 12,520.29

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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.