Home / 11,504.72-15,876.30-6,400.21

Finding the Fourth Proportional to 11,504.72, 15,876.30 and 6,400.21

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Solution

The fourth proportional to 11,504.72, 15,876.30 and 6,400.21 is: 8,832.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,504.72 : 15,876.30 = 6,400.21 : x
  2. Step 2: Convert to fraction form
    11,504.72/15,876.30 = 6,400.21/x
  3. Step 3: Cross multiply
    11,504.72x = 15,876.30 × 6,400.21
  4. Step 4: Simplify right side
    11,504.72x = 101,611,654.02
  5. Step 5: Solve for x
    x = 101,611,654.02/11,504.72
  6. Step 6: Final answer
    x = 8,832.17

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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.