Home / 28,539.75-39,384.90-15,964.50

Finding the Fourth Proportional to 28,539.75, 39,384.90 and 15,964.50

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Solution

The fourth proportional to 28,539.75, 39,384.90 and 15,964.50 is: 22,031.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.75 : 39,384.90 = 15,964.50 : x
  2. Step 2: Convert to fraction form
    28,539.75/39,384.90 = 15,964.50/x
  3. Step 3: Cross multiply
    28,539.75x = 39,384.90 × 15,964.50
  4. Step 4: Simplify right side
    28,539.75x = 628,760,236.05
  5. Step 5: Solve for x
    x = 628,760,236.05/28,539.75
  6. Step 6: Final answer
    x = 22,031.04

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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.