Home / 28,685.14-39,586.58-15,939.25

Finding the Fourth Proportional to 28,685.14, 39,586.58 and 15,939.25

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Solution

The fourth proportional to 28,685.14, 39,586.58 and 15,939.25 is: 21,996.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.14 : 39,586.58 = 15,939.25 : x
  2. Step 2: Convert to fraction form
    28,685.14/39,586.58 = 15,939.25/x
  3. Step 3: Cross multiply
    28,685.14x = 39,586.58 × 15,939.25
  4. Step 4: Simplify right side
    28,685.14x = 630,980,315.57
  5. Step 5: Solve for x
    x = 630,980,315.57/28,685.14
  6. Step 6: Final answer
    x = 21,996.77

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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.