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Finding the Fourth Proportional to 17,562.80, 26,305.80 and 13,636.40

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Solution

The fourth proportional to 17,562.80, 26,305.80 and 13,636.40 is: 20,424.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,562.80 : 26,305.80 = 13,636.40 : x
  2. Step 2: Convert to fraction form
    17,562.80/26,305.80 = 13,636.40/x
  3. Step 3: Cross multiply
    17,562.80x = 26,305.80 × 13,636.40
  4. Step 4: Simplify right side
    17,562.80x = 358,716,411.12
  5. Step 5: Solve for x
    x = 358,716,411.12/17,562.80
  6. Step 6: Final answer
    x = 20,424.78

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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.