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Finding the Fourth Proportional to 17,720.58, 26,524.68 and 9,905.70

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Solution

The fourth proportional to 17,720.58, 26,524.68 and 9,905.70 is: 14,827.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.58 : 26,524.68 = 9,905.70 : x
  2. Step 2: Convert to fraction form
    17,720.58/26,524.68 = 9,905.70/x
  3. Step 3: Cross multiply
    17,720.58x = 26,524.68 × 9,905.70
  4. Step 4: Simplify right side
    17,720.58x = 262,745,522.68
  5. Step 5: Solve for x
    x = 262,745,522.68/17,720.58
  6. Step 6: Final answer
    x = 14,827.14

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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.