Home / 10,457.40-15,691.56-4,218.96

Finding the Fourth Proportional to 10,457.40, 15,691.56 and 4,218.96

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Solution

The fourth proportional to 10,457.40, 15,691.56 and 4,218.96 is: 6,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,457.40 : 15,691.56 = 4,218.96 : x
  2. Step 2: Convert to fraction form
    10,457.40/15,691.56 = 4,218.96/x
  3. Step 3: Cross multiply
    10,457.40x = 15,691.56 × 4,218.96
  4. Step 4: Simplify right side
    10,457.40x = 66,202,063.98
  5. Step 5: Solve for x
    x = 66,202,063.98/10,457.40
  6. Step 6: Final answer
    x = 6,330.64

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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.