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Finding the Fourth Proportional to 18,676.71, 25,721.04 and 16,437.77

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Solution

The fourth proportional to 18,676.71, 25,721.04 and 16,437.77 is: 22,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.71 : 25,721.04 = 16,437.77 : x
  2. Step 2: Convert to fraction form
    18,676.71/25,721.04 = 16,437.77/x
  3. Step 3: Cross multiply
    18,676.71x = 25,721.04 × 16,437.77
  4. Step 4: Simplify right side
    18,676.71x = 422,796,569.17
  5. Step 5: Solve for x
    x = 422,796,569.17/18,676.71
  6. Step 6: Final answer
    x = 22,637.64

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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.