Home / 11,019.40-16,529.10-9,905.80

Finding the Fourth Proportional to 11,019.40, 16,529.10 and 9,905.80

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Solution

The fourth proportional to 11,019.40, 16,529.10 and 9,905.80 is: 14,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,019.40 : 16,529.10 = 9,905.80 : x
  2. Step 2: Convert to fraction form
    11,019.40/16,529.10 = 9,905.80/x
  3. Step 3: Cross multiply
    11,019.40x = 16,529.10 × 9,905.80
  4. Step 4: Simplify right side
    11,019.40x = 163,733,958.78
  5. Step 5: Solve for x
    x = 163,733,958.78/11,019.40
  6. Step 6: Final answer
    x = 14,858.70

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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.