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Finding the Fourth Proportional to 28,677.81, 43,015.82 and 7,901.13

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Solution

The fourth proportional to 28,677.81, 43,015.82 and 7,901.13 is: 11,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677.81 : 43,015.82 = 7,901.13 : x
  2. Step 2: Convert to fraction form
    28,677.81/43,015.82 = 7,901.13/x
  3. Step 3: Cross multiply
    28,677.81x = 43,015.82 × 7,901.13
  4. Step 4: Simplify right side
    28,677.81x = 339,873,546.37
  5. Step 5: Solve for x
    x = 339,873,546.37/28,677.81
  6. Step 6: Final answer
    x = 11,851.45

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1.5x scale

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.