Home / 13,459.65-20,190.81-5,146.66

Finding the Fourth Proportional to 13,459.65, 20,190.81 and 5,146.66

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Solution

The fourth proportional to 13,459.65, 20,190.81 and 5,146.66 is: 7,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.65 : 20,190.81 = 5,146.66 : x
  2. Step 2: Convert to fraction form
    13,459.65/20,190.81 = 5,146.66/x
  3. Step 3: Cross multiply
    13,459.65x = 20,190.81 × 5,146.66
  4. Step 4: Simplify right side
    13,459.65x = 103,915,234.19
  5. Step 5: Solve for x
    x = 103,915,234.19/13,459.65
  6. Step 6: Final answer
    x = 7,720.50

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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.