Home / 12,688.39-19,021.65-6,105.52

Finding the Fourth Proportional to 12,688.39, 19,021.65 and 6,105.52

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Solution

The fourth proportional to 12,688.39, 19,021.65 and 6,105.52 is: 9,153.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.39 : 19,021.65 = 6,105.52 : x
  2. Step 2: Convert to fraction form
    12,688.39/19,021.65 = 6,105.52/x
  3. Step 3: Cross multiply
    12,688.39x = 19,021.65 × 6,105.52
  4. Step 4: Simplify right side
    12,688.39x = 116,137,033.98
  5. Step 5: Solve for x
    x = 116,137,033.98/12,688.39
  6. Step 6: Final answer
    x = 9,153.02

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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.