Home / 28,868.56-39,835.74-16,290.88

Finding the Fourth Proportional to 28,868.56, 39,835.74 and 16,290.88

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Solution

The fourth proportional to 28,868.56, 39,835.74 and 16,290.88 is: 22,479.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,868.56 : 39,835.74 = 16,290.88 : x
  2. Step 2: Convert to fraction form
    28,868.56/39,835.74 = 16,290.88/x
  3. Step 3: Cross multiply
    28,868.56x = 39,835.74 × 16,290.88
  4. Step 4: Simplify right side
    28,868.56x = 648,959,260.05
  5. Step 5: Solve for x
    x = 648,959,260.05/28,868.56
  6. Step 6: Final answer
    x = 22,479.79

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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.