Home / 15,744.80-21,727.68-8,671.07

Finding the Fourth Proportional to 15,744.80, 21,727.68 and 8,671.07

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Solution

The fourth proportional to 15,744.80, 21,727.68 and 8,671.07 is: 11,965.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.80 : 21,727.68 = 8,671.07 : x
  2. Step 2: Convert to fraction form
    15,744.80/21,727.68 = 8,671.07/x
  3. Step 3: Cross multiply
    15,744.80x = 21,727.68 × 8,671.07
  4. Step 4: Simplify right side
    15,744.80x = 188,402,125.58
  5. Step 5: Solve for x
    x = 188,402,125.58/15,744.80
  6. Step 6: Final answer
    x = 11,965.99

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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.