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Finding the Fourth Proportional to 29,730.51, 41,041.19 and 20,813.01

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Solution

The fourth proportional to 29,730.51, 41,041.19 and 20,813.01 is: 28,731.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,730.51 : 41,041.19 = 20,813.01 : x
  2. Step 2: Convert to fraction form
    29,730.51/41,041.19 = 20,813.01/x
  3. Step 3: Cross multiply
    29,730.51x = 41,041.19 × 20,813.01
  4. Step 4: Simplify right side
    29,730.51x = 854,190,593.82
  5. Step 5: Solve for x
    x = 854,190,593.82/29,730.51
  6. Step 6: Final answer
    x = 28,731.11

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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.