Home / 28,429.50-39,233.52-15,855.06

Finding the Fourth Proportional to 28,429.50, 39,233.52 and 15,855.06

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Solution

The fourth proportional to 28,429.50, 39,233.52 and 15,855.06 is: 21,880.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.50 : 39,233.52 = 15,855.06 : x
  2. Step 2: Convert to fraction form
    28,429.50/39,233.52 = 15,855.06/x
  3. Step 3: Cross multiply
    28,429.50x = 39,233.52 × 15,855.06
  4. Step 4: Simplify right side
    28,429.50x = 622,049,813.61
  5. Step 5: Solve for x
    x = 622,049,813.61/28,429.50
  6. Step 6: Final answer
    x = 21,880.43

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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.