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Finding the Fourth Proportional to 17,620.70, 26,382.45 and 13,732.70

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Solution

The fourth proportional to 17,620.70, 26,382.45 and 13,732.70 is: 20,561.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,620.70 : 26,382.45 = 13,732.70 : x
  2. Step 2: Convert to fraction form
    17,620.70/26,382.45 = 13,732.70/x
  3. Step 3: Cross multiply
    17,620.70x = 26,382.45 × 13,732.70
  4. Step 4: Simplify right side
    17,620.70x = 362,302,271.12
  5. Step 5: Solve for x
    x = 362,302,271.12/17,620.70
  6. Step 6: Final answer
    x = 20,561.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.