Home / 18,774.37-28,130.46-13,200.49

Finding the Fourth Proportional to 18,774.37, 28,130.46 and 13,200.49

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Solution

The fourth proportional to 18,774.37, 28,130.46 and 13,200.49 is: 19,778.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.37 : 28,130.46 = 13,200.49 : x
  2. Step 2: Convert to fraction form
    18,774.37/28,130.46 = 13,200.49/x
  3. Step 3: Cross multiply
    18,774.37x = 28,130.46 × 13,200.49
  4. Step 4: Simplify right side
    18,774.37x = 371,335,715.27
  5. Step 5: Solve for x
    x = 371,335,715.27/18,774.37
  6. Step 6: Final answer
    x = 19,778.86

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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.