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Finding the Fourth Proportional to 12,888.31, 19,333.20 and 4,004.48

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Solution

The fourth proportional to 12,888.31, 19,333.20 and 4,004.48 is: 6,006.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.31 : 19,333.20 = 4,004.48 : x
  2. Step 2: Convert to fraction form
    12,888.31/19,333.20 = 4,004.48/x
  3. Step 3: Cross multiply
    12,888.31x = 19,333.20 × 4,004.48
  4. Step 4: Simplify right side
    12,888.31x = 77,419,412.74
  5. Step 5: Solve for x
    x = 77,419,412.74/12,888.31
  6. Step 6: Final answer
    x = 6,006.95

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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.