Home / 10,419.18-14,380.81-6,641.60

Finding the Fourth Proportional to 10,419.18, 14,380.81 and 6,641.60

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Solution

The fourth proportional to 10,419.18, 14,380.81 and 6,641.60 is: 9,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.18 : 14,380.81 = 6,641.60 : x
  2. Step 2: Convert to fraction form
    10,419.18/14,380.81 = 6,641.60/x
  3. Step 3: Cross multiply
    10,419.18x = 14,380.81 × 6,641.60
  4. Step 4: Simplify right side
    10,419.18x = 95,511,524.09
  5. Step 5: Solve for x
    x = 95,511,524.09/10,419.18
  6. Step 6: Final answer
    x = 9,166.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.