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Finding the Fourth Proportional to 20,873, 31,434.52 and 19,006.76

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Solution

The fourth proportional to 20,873, 31,434.52 and 19,006.76 is: 28,623.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873 : 31,434.52 = 19,006.76 : x
  2. Step 2: Convert to fraction form
    20,873/31,434.52 = 19,006.76/x
  3. Step 3: Cross multiply
    20,873x = 31,434.52 × 19,006.76
  4. Step 4: Simplify right side
    20,873x = 597,468,377.36
  5. Step 5: Solve for x
    x = 597,468,377.36/20,873
  6. Step 6: Final answer
    x = 28,623.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.