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Finding the Fourth Proportional to 10,950.80, 16,421.40 and 4,374.80

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Solution

The fourth proportional to 10,950.80, 16,421.40 and 4,374.80 is: 6,560.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,950.80 : 16,421.40 = 4,374.80 : x
  2. Step 2: Convert to fraction form
    10,950.80/16,421.40 = 4,374.80/x
  3. Step 3: Cross multiply
    10,950.80x = 16,421.40 × 4,374.80
  4. Step 4: Simplify right side
    10,950.80x = 71,840,340.72
  5. Step 5: Solve for x
    x = 71,840,340.72/10,950.80
  6. Step 6: Final answer
    x = 6,560.28

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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.