Home / 13,622.78-20,423.81-7,044.77

Finding the Fourth Proportional to 13,622.78, 20,423.81 and 7,044.77

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Solution

The fourth proportional to 13,622.78, 20,423.81 and 7,044.77 is: 10,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.78 : 20,423.81 = 7,044.77 : x
  2. Step 2: Convert to fraction form
    13,622.78/20,423.81 = 7,044.77/x
  3. Step 3: Cross multiply
    13,622.78x = 20,423.81 × 7,044.77
  4. Step 4: Simplify right side
    13,622.78x = 143,881,112.65
  5. Step 5: Solve for x
    x = 143,881,112.65/13,622.78
  6. Step 6: Final answer
    x = 10,561.80

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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.