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Finding the Fourth Proportional to 14,006.88, 19,329.90 and 7,719.66

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Solution

The fourth proportional to 14,006.88, 19,329.90 and 7,719.66 is: 10,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,006.88 : 19,329.90 = 7,719.66 : x
  2. Step 2: Convert to fraction form
    14,006.88/19,329.90 = 7,719.66/x
  3. Step 3: Cross multiply
    14,006.88x = 19,329.90 × 7,719.66
  4. Step 4: Simplify right side
    14,006.88x = 149,220,255.83
  5. Step 5: Solve for x
    x = 149,220,255.83/14,006.88
  6. Step 6: Final answer
    x = 10,653.35

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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.