Home / 29,901.72-40,965.54-28,780.68

Finding the Fourth Proportional to 29,901.72, 40,965.54 and 28,780.68

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Solution

The fourth proportional to 29,901.72, 40,965.54 and 28,780.68 is: 39,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,901.72 : 40,965.54 = 28,780.68 : x
  2. Step 2: Convert to fraction form
    29,901.72/40,965.54 = 28,780.68/x
  3. Step 3: Cross multiply
    29,901.72x = 40,965.54 × 28,780.68
  4. Step 4: Simplify right side
    29,901.72x = 1,179,016,097.77
  5. Step 5: Solve for x
    x = 1,179,016,097.77/29,901.72
  6. Step 6: Final answer
    x = 39,429.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.