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Finding the Fourth Proportional to 12,969.96, 19,455.24 and 9,703.80

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Solution

The fourth proportional to 12,969.96, 19,455.24 and 9,703.80 is: 14,555.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,969.96 : 19,455.24 = 9,703.80 : x
  2. Step 2: Convert to fraction form
    12,969.96/19,455.24 = 9,703.80/x
  3. Step 3: Cross multiply
    12,969.96x = 19,455.24 × 9,703.80
  4. Step 4: Simplify right side
    12,969.96x = 188,789,757.91
  5. Step 5: Solve for x
    x = 188,789,757.91/12,969.96
  6. Step 6: Final answer
    x = 14,555.92

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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.