Home / 21,155.23-29,190.52-12,076.45

Finding the Fourth Proportional to 21,155.23, 29,190.52 and 12,076.45

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Solution

The fourth proportional to 21,155.23, 29,190.52 and 12,076.45 is: 16,663.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.23 : 29,190.52 = 12,076.45 : x
  2. Step 2: Convert to fraction form
    21,155.23/29,190.52 = 12,076.45/x
  3. Step 3: Cross multiply
    21,155.23x = 29,190.52 × 12,076.45
  4. Step 4: Simplify right side
    21,155.23x = 352,517,855.25
  5. Step 5: Solve for x
    x = 352,517,855.25/21,155.23
  6. Step 6: Final answer
    x = 16,663.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.