Home / 20,461.51-28,232.64-11,961.99

Finding the Fourth Proportional to 20,461.51, 28,232.64 and 11,961.99

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Solution

The fourth proportional to 20,461.51, 28,232.64 and 11,961.99 is: 16,505.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.51 : 28,232.64 = 11,961.99 : x
  2. Step 2: Convert to fraction form
    20,461.51/28,232.64 = 11,961.99/x
  3. Step 3: Cross multiply
    20,461.51x = 28,232.64 × 11,961.99
  4. Step 4: Simplify right side
    20,461.51x = 337,718,557.35
  5. Step 5: Solve for x
    x = 337,718,557.35/20,461.51
  6. Step 6: Final answer
    x = 16,505.07

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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.