Home / 8,676.40-13,022.70-7,445.20

Finding the Fourth Proportional to 8,676.40, 13,022.70 and 7,445.20

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Solution

The fourth proportional to 8,676.40, 13,022.70 and 7,445.20 is: 11,174.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.40 : 13,022.70 = 7,445.20 : x
  2. Step 2: Convert to fraction form
    8,676.40/13,022.70 = 7,445.20/x
  3. Step 3: Cross multiply
    8,676.40x = 13,022.70 × 7,445.20
  4. Step 4: Simplify right side
    8,676.40x = 96,956,606.04
  5. Step 5: Solve for x
    x = 96,956,606.04/8,676.40
  6. Step 6: Final answer
    x = 11,174.75

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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.