Home / 13,360.35-20,040.53-7,139.55

Finding the Fourth Proportional to 13,360.35, 20,040.53 and 7,139.55

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Solution

The fourth proportional to 13,360.35, 20,040.53 and 7,139.55 is: 10,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.35 : 20,040.53 = 7,139.55 : x
  2. Step 2: Convert to fraction form
    13,360.35/20,040.53 = 7,139.55/x
  3. Step 3: Cross multiply
    13,360.35x = 20,040.53 × 7,139.55
  4. Step 4: Simplify right side
    13,360.35x = 143,080,330.26
  5. Step 5: Solve for x
    x = 143,080,330.26/13,360.35
  6. Step 6: Final answer
    x = 10,709.33

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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.