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Finding the Fourth Proportional to 14,403.52, 21,604.87 and 7,871.07

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Solution

The fourth proportional to 14,403.52, 21,604.87 and 7,871.07 is: 11,806.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,403.52 : 21,604.87 = 7,871.07 : x
  2. Step 2: Convert to fraction form
    14,403.52/21,604.87 = 7,871.07/x
  3. Step 3: Cross multiply
    14,403.52x = 21,604.87 × 7,871.07
  4. Step 4: Simplify right side
    14,403.52x = 170,053,404.76
  5. Step 5: Solve for x
    x = 170,053,404.76/14,403.52
  6. Step 6: Final answer
    x = 11,806.38

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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.