Home / 10,817.40-16,190.10-7,847.40

Finding the Fourth Proportional to 10,817.40, 16,190.10 and 7,847.40

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Solution

The fourth proportional to 10,817.40, 16,190.10 and 7,847.40 is: 11,744.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,817.40 : 16,190.10 = 7,847.40 : x
  2. Step 2: Convert to fraction form
    10,817.40/16,190.10 = 7,847.40/x
  3. Step 3: Cross multiply
    10,817.40x = 16,190.10 × 7,847.40
  4. Step 4: Simplify right side
    10,817.40x = 127,050,190.74
  5. Step 5: Solve for x
    x = 127,050,190.74/10,817.40
  6. Step 6: Final answer
    x = 11,744.98

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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.