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Finding the Fourth Proportional to 29,691.63, 40,976.37 and 19,488.76

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Solution

The fourth proportional to 29,691.63, 40,976.37 and 19,488.76 is: 26,895.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,691.63 : 40,976.37 = 19,488.76 : x
  2. Step 2: Convert to fraction form
    29,691.63/40,976.37 = 19,488.76/x
  3. Step 3: Cross multiply
    29,691.63x = 40,976.37 × 19,488.76
  4. Step 4: Simplify right side
    29,691.63x = 798,578,538.16
  5. Step 5: Solve for x
    x = 798,578,538.16/29,691.63
  6. Step 6: Final answer
    x = 26,895.75

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1.5x scale

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.