Home / 21,480.72-29,645.63-12,049.35

Finding the Fourth Proportional to 21,480.72, 29,645.63 and 12,049.35

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Solution

The fourth proportional to 21,480.72, 29,645.63 and 12,049.35 is: 16,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.72 : 29,645.63 = 12,049.35 : x
  2. Step 2: Convert to fraction form
    21,480.72/29,645.63 = 12,049.35/x
  3. Step 3: Cross multiply
    21,480.72x = 29,645.63 × 12,049.35
  4. Step 4: Simplify right side
    21,480.72x = 357,210,571.84
  5. Step 5: Solve for x
    x = 357,210,571.84/21,480.72
  6. Step 6: Final answer
    x = 16,629.36

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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.