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Finding the Fourth Proportional to 26,660, 36,790.80 and 15,482.72

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Solution

The fourth proportional to 26,660, 36,790.80 and 15,482.72 is: 21,366.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,660 : 36,790.80 = 15,482.72 : x
  2. Step 2: Convert to fraction form
    26,660/36,790.80 = 15,482.72/x
  3. Step 3: Cross multiply
    26,660x = 36,790.80 × 15,482.72
  4. Step 4: Simplify right side
    26,660x = 569,621,654.98
  5. Step 5: Solve for x
    x = 569,621,654.98/26,660
  6. Step 6: Final answer
    x = 21,366.15

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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.