Home / 13,775.30-20,665.85-7,199.72

Finding the Fourth Proportional to 13,775.30, 20,665.85 and 7,199.72

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Solution

The fourth proportional to 13,775.30, 20,665.85 and 7,199.72 is: 10,801.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.30 : 20,665.85 = 7,199.72 : x
  2. Step 2: Convert to fraction form
    13,775.30/20,665.85 = 7,199.72/x
  3. Step 3: Cross multiply
    13,775.30x = 20,665.85 × 7,199.72
  4. Step 4: Simplify right side
    13,775.30x = 148,788,333.56
  5. Step 5: Solve for x
    x = 148,788,333.56/13,775.30
  6. Step 6: Final answer
    x = 10,801.10

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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.