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Finding the Fourth Proportional to 28,917, 43,393.32 and 13,335.84

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Solution

The fourth proportional to 28,917, 43,393.32 and 13,335.84 is: 20,011.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917 : 43,393.32 = 13,335.84 : x
  2. Step 2: Convert to fraction form
    28,917/43,393.32 = 13,335.84/x
  3. Step 3: Cross multiply
    28,917x = 43,393.32 × 13,335.84
  4. Step 4: Simplify right side
    28,917x = 578,686,372.59
  5. Step 5: Solve for x
    x = 578,686,372.59/28,917
  6. Step 6: Final answer
    x = 20,011.98

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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.