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Finding the Fourth Proportional to 14,006.94, 19,330.47 and 7,719.90

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Solution

The fourth proportional to 14,006.94, 19,330.47 and 7,719.90 is: 10,653.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,006.94 : 19,330.47 = 7,719.90 : x
  2. Step 2: Convert to fraction form
    14,006.94/19,330.47 = 7,719.90/x
  3. Step 3: Cross multiply
    14,006.94x = 19,330.47 × 7,719.90
  4. Step 4: Simplify right side
    14,006.94x = 149,229,295.35
  5. Step 5: Solve for x
    x = 149,229,295.35/14,006.94
  6. Step 6: Final answer
    x = 10,653.95

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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.