Home / 12,738.81-19,109.10-5,335.83

Finding the Fourth Proportional to 12,738.81, 19,109.10 and 5,335.83

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Solution

The fourth proportional to 12,738.81, 19,109.10 and 5,335.83 is: 8,004.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.81 : 19,109.10 = 5,335.83 : x
  2. Step 2: Convert to fraction form
    12,738.81/19,109.10 = 5,335.83/x
  3. Step 3: Cross multiply
    12,738.81x = 19,109.10 × 5,335.83
  4. Step 4: Simplify right side
    12,738.81x = 101,962,909.05
  5. Step 5: Solve for x
    x = 101,962,909.05/12,738.81
  6. Step 6: Final answer
    x = 8,004.12

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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.