Home / 20,539.44-30,828.42-10,685.70

Finding the Fourth Proportional to 20,539.44, 30,828.42 and 10,685.70

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Solution

The fourth proportional to 20,539.44, 30,828.42 and 10,685.70 is: 16,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.44 : 30,828.42 = 10,685.70 : x
  2. Step 2: Convert to fraction form
    20,539.44/30,828.42 = 10,685.70/x
  3. Step 3: Cross multiply
    20,539.44x = 30,828.42 × 10,685.70
  4. Step 4: Simplify right side
    20,539.44x = 329,423,247.59
  5. Step 5: Solve for x
    x = 329,423,247.59/20,539.44
  6. Step 6: Final answer
    x = 16,038.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.