Home / 19,180.49-28,753.79-7,485.53

Finding the Fourth Proportional to 19,180.49, 28,753.79 and 7,485.53

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Solution

The fourth proportional to 19,180.49, 28,753.79 and 7,485.53 is: 11,221.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,180.49 : 28,753.79 = 7,485.53 : x
  2. Step 2: Convert to fraction form
    19,180.49/28,753.79 = 7,485.53/x
  3. Step 3: Cross multiply
    19,180.49x = 28,753.79 × 7,485.53
  4. Step 4: Simplify right side
    19,180.49x = 215,237,176.46
  5. Step 5: Solve for x
    x = 215,237,176.46/19,180.49
  6. Step 6: Final answer
    x = 11,221.68

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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.