Home / 20,566.70-30,864.45-13,189.10

Finding the Fourth Proportional to 20,566.70, 30,864.45 and 13,189.10

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Solution

The fourth proportional to 20,566.70, 30,864.45 and 13,189.10 is: 19,792.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.70 : 30,864.45 = 13,189.10 : x
  2. Step 2: Convert to fraction form
    20,566.70/30,864.45 = 13,189.10/x
  3. Step 3: Cross multiply
    20,566.70x = 30,864.45 × 13,189.10
  4. Step 4: Simplify right side
    20,566.70x = 407,074,317.50
  5. Step 5: Solve for x
    x = 407,074,317.50/20,566.70
  6. Step 6: Final answer
    x = 19,792.88

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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.