Home / 19,223.71-28,821.72-11,812.85

Finding the Fourth Proportional to 19,223.71, 28,821.72 and 11,812.85

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Solution

The fourth proportional to 19,223.71, 28,821.72 and 11,812.85 is: 17,710.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,223.71 : 28,821.72 = 11,812.85 : x
  2. Step 2: Convert to fraction form
    19,223.71/28,821.72 = 11,812.85/x
  3. Step 3: Cross multiply
    19,223.71x = 28,821.72 × 11,812.85
  4. Step 4: Simplify right side
    19,223.71x = 340,466,655.10
  5. Step 5: Solve for x
    x = 340,466,655.10/19,223.71
  6. Step 6: Final answer
    x = 17,710.77

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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.