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Finding the Fourth Proportional to 28,941.58, 43,409.11 and 19,641.34

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Solution

The fourth proportional to 28,941.58, 43,409.11 and 19,641.34 is: 29,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,941.58 : 43,409.11 = 19,641.34 : x
  2. Step 2: Convert to fraction form
    28,941.58/43,409.11 = 19,641.34/x
  3. Step 3: Cross multiply
    28,941.58x = 43,409.11 × 19,641.34
  4. Step 4: Simplify right side
    28,941.58x = 852,613,088.61
  5. Step 5: Solve for x
    x = 852,613,088.61/28,941.58
  6. Step 6: Final answer
    x = 29,459.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.