Home / 13,960.96-20,926.80-5,190.40

Finding the Fourth Proportional to 13,960.96, 20,926.80 and 5,190.40

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Solution

The fourth proportional to 13,960.96, 20,926.80 and 5,190.40 is: 7,780.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,960.96 : 20,926.80 = 5,190.40 : x
  2. Step 2: Convert to fraction form
    13,960.96/20,926.80 = 5,190.40/x
  3. Step 3: Cross multiply
    13,960.96x = 20,926.80 × 5,190.40
  4. Step 4: Simplify right side
    13,960.96x = 108,618,462.72
  5. Step 5: Solve for x
    x = 108,618,462.72/13,960.96
  6. Step 6: Final answer
    x = 7,780.16

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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.