Home / 20,285.18-28,011.37-12,744.59

Finding the Fourth Proportional to 20,285.18, 28,011.37 and 12,744.59

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Solution

The fourth proportional to 20,285.18, 28,011.37 and 12,744.59 is: 17,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.18 : 28,011.37 = 12,744.59 : x
  2. Step 2: Convert to fraction form
    20,285.18/28,011.37 = 12,744.59/x
  3. Step 3: Cross multiply
    20,285.18x = 28,011.37 × 12,744.59
  4. Step 4: Simplify right side
    20,285.18x = 356,993,435.53
  5. Step 5: Solve for x
    x = 356,993,435.53/20,285.18
  6. Step 6: Final answer
    x = 17,598.73

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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.