Home / 12,926.85-19,390.32-5,135.64

Finding the Fourth Proportional to 12,926.85, 19,390.32 and 5,135.64

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Solution

The fourth proportional to 12,926.85, 19,390.32 and 5,135.64 is: 7,703.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,926.85 : 19,390.32 = 5,135.64 : x
  2. Step 2: Convert to fraction form
    12,926.85/19,390.32 = 5,135.64/x
  3. Step 3: Cross multiply
    12,926.85x = 19,390.32 × 5,135.64
  4. Step 4: Simplify right side
    12,926.85x = 99,581,703.00
  5. Step 5: Solve for x
    x = 99,581,703.00/12,926.85
  6. Step 6: Final answer
    x = 7,703.48

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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.