Home / 28,660.76-39,551.09-15,913.61

Finding the Fourth Proportional to 28,660.76, 39,551.09 and 15,913.61

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Solution

The fourth proportional to 28,660.76, 39,551.09 and 15,913.61 is: 21,960.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.76 : 39,551.09 = 15,913.61 : x
  2. Step 2: Convert to fraction form
    28,660.76/39,551.09 = 15,913.61/x
  3. Step 3: Cross multiply
    28,660.76x = 39,551.09 × 15,913.61
  4. Step 4: Simplify right side
    28,660.76x = 629,400,344.01
  5. Step 5: Solve for x
    x = 629,400,344.01/28,660.76
  6. Step 6: Final answer
    x = 21,960.35

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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.