Home / 12,621.56-18,911.40-7,676.24

Finding the Fourth Proportional to 12,621.56, 18,911.40 and 7,676.24

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Solution

The fourth proportional to 12,621.56, 18,911.40 and 7,676.24 is: 11,501.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.56 : 18,911.40 = 7,676.24 : x
  2. Step 2: Convert to fraction form
    12,621.56/18,911.40 = 7,676.24/x
  3. Step 3: Cross multiply
    12,621.56x = 18,911.40 × 7,676.24
  4. Step 4: Simplify right side
    12,621.56x = 145,168,350.58
  5. Step 5: Solve for x
    x = 145,168,350.58/12,621.56
  6. Step 6: Final answer
    x = 11,501.62

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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.