Home / 21,155.94-29,188.53-12,202.25

Finding the Fourth Proportional to 21,155.94, 29,188.53 and 12,202.25

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Solution

The fourth proportional to 21,155.94, 29,188.53 and 12,202.25 is: 16,835.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.94 : 29,188.53 = 12,202.25 : x
  2. Step 2: Convert to fraction form
    21,155.94/29,188.53 = 12,202.25/x
  3. Step 3: Cross multiply
    21,155.94x = 29,188.53 × 12,202.25
  4. Step 4: Simplify right side
    21,155.94x = 356,165,594.25
  5. Step 5: Solve for x
    x = 356,165,594.25/21,155.94
  6. Step 6: Final answer
    x = 16,835.25

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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.