Home / 13,370.01-20,049.08-7,128.85

Finding the Fourth Proportional to 13,370.01, 20,049.08 and 7,128.85

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Solution

The fourth proportional to 13,370.01, 20,049.08 and 7,128.85 is: 10,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.01 : 20,049.08 = 7,128.85 : x
  2. Step 2: Convert to fraction form
    13,370.01/20,049.08 = 7,128.85/x
  3. Step 3: Cross multiply
    13,370.01x = 20,049.08 × 7,128.85
  4. Step 4: Simplify right side
    13,370.01x = 142,926,883.96
  5. Step 5: Solve for x
    x = 142,926,883.96/13,370.01
  6. Step 6: Final answer
    x = 10,690.11

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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.