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Finding the Fourth Proportional to 19,720.56, 29,588.04 and 9,333.12

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Solution

The fourth proportional to 19,720.56, 29,588.04 and 9,333.12 is: 14,003.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.56 : 29,588.04 = 9,333.12 : x
  2. Step 2: Convert to fraction form
    19,720.56/29,588.04 = 9,333.12/x
  3. Step 3: Cross multiply
    19,720.56x = 29,588.04 × 9,333.12
  4. Step 4: Simplify right side
    19,720.56x = 276,148,727.88
  5. Step 5: Solve for x
    x = 276,148,727.88/19,720.56
  6. Step 6: Final answer
    x = 14,003.09

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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.