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Finding the Fourth Proportional to 19,797.12, 29,695.68 and 8,703.72

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Solution

The fourth proportional to 19,797.12, 29,695.68 and 8,703.72 is: 13,055.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,797.12 : 29,695.68 = 8,703.72 : x
  2. Step 2: Convert to fraction form
    19,797.12/29,695.68 = 8,703.72/x
  3. Step 3: Cross multiply
    19,797.12x = 29,695.68 × 8,703.72
  4. Step 4: Simplify right side
    19,797.12x = 258,462,883.93
  5. Step 5: Solve for x
    x = 258,462,883.93/19,797.12
  6. Step 6: Final answer
    x = 13,055.58

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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.