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Finding the Fourth Proportional to 19,329.74, 28,994.63 and 9,963.91

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Solution

The fourth proportional to 19,329.74, 28,994.63 and 9,963.91 is: 14,945.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.74 : 28,994.63 = 9,963.91 : x
  2. Step 2: Convert to fraction form
    19,329.74/28,994.63 = 9,963.91/x
  3. Step 3: Cross multiply
    19,329.74x = 28,994.63 × 9,963.91
  4. Step 4: Simplify right side
    19,329.74x = 288,899,870.23
  5. Step 5: Solve for x
    x = 288,899,870.23/19,329.74
  6. Step 6: Final answer
    x = 14,945.88

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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.