Home / 15,086.57-20,800.31-12,533.85

Finding the Fourth Proportional to 15,086.57, 20,800.31 and 12,533.85

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Solution

The fourth proportional to 15,086.57, 20,800.31 and 12,533.85 is: 17,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.57 : 20,800.31 = 12,533.85 : x
  2. Step 2: Convert to fraction form
    15,086.57/20,800.31 = 12,533.85/x
  3. Step 3: Cross multiply
    15,086.57x = 20,800.31 × 12,533.85
  4. Step 4: Simplify right side
    15,086.57x = 260,707,902.82
  5. Step 5: Solve for x
    x = 260,707,902.82/15,086.57
  6. Step 6: Final answer
    x = 17,280.80

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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.