Home / 10,118.40-15,169.70-6,419.94

Finding the Fourth Proportional to 10,118.40, 15,169.70 and 6,419.94

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Solution

The fourth proportional to 10,118.40, 15,169.70 and 6,419.94 is: 9,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,118.40 : 15,169.70 = 6,419.94 : x
  2. Step 2: Convert to fraction form
    10,118.40/15,169.70 = 6,419.94/x
  3. Step 3: Cross multiply
    10,118.40x = 15,169.70 × 6,419.94
  4. Step 4: Simplify right side
    10,118.40x = 97,388,563.82
  5. Step 5: Solve for x
    x = 97,388,563.82/10,118.40
  6. Step 6: Final answer
    x = 9,624.90

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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.