Home / 28,685.32-39,586.25-15,939.68

Finding the Fourth Proportional to 28,685.32, 39,586.25 and 15,939.68

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Solution

The fourth proportional to 28,685.32, 39,586.25 and 15,939.68 is: 21,997.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.32 : 39,586.25 = 15,939.68 : x
  2. Step 2: Convert to fraction form
    28,685.32/39,586.25 = 15,939.68/x
  3. Step 3: Cross multiply
    28,685.32x = 39,586.25 × 15,939.68
  4. Step 4: Simplify right side
    28,685.32x = 630,992,157.40
  5. Step 5: Solve for x
    x = 630,992,157.40/28,685.32
  6. Step 6: Final answer
    x = 21,997.04

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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.