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Finding the Fourth Proportional to 14,339.80, 19,789.48 and 7,966.87

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Solution

The fourth proportional to 14,339.80, 19,789.48 and 7,966.87 is: 10,994.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,339.80 : 19,789.48 = 7,966.87 : x
  2. Step 2: Convert to fraction form
    14,339.80/19,789.48 = 7,966.87/x
  3. Step 3: Cross multiply
    14,339.80x = 19,789.48 × 7,966.87
  4. Step 4: Simplify right side
    14,339.80x = 157,660,214.53
  5. Step 5: Solve for x
    x = 157,660,214.53/14,339.80
  6. Step 6: Final answer
    x = 10,994.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.