Home / 12,688.37-19,026.55-3,800.28

Finding the Fourth Proportional to 12,688.37, 19,026.55 and 3,800.28

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Solution

The fourth proportional to 12,688.37, 19,026.55 and 3,800.28 is: 5,698.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.37 : 19,026.55 = 3,800.28 : x
  2. Step 2: Convert to fraction form
    12,688.37/19,026.55 = 3,800.28/x
  3. Step 3: Cross multiply
    12,688.37x = 19,026.55 × 3,800.28
  4. Step 4: Simplify right side
    12,688.37x = 72,306,207.93
  5. Step 5: Solve for x
    x = 72,306,207.93/12,688.37
  6. Step 6: Final answer
    x = 5,698.62

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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.