Home / 12,678.21-19,011.54-6,753.59

Finding the Fourth Proportional to 12,678.21, 19,011.54 and 6,753.59

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Solution

The fourth proportional to 12,678.21, 19,011.54 and 6,753.59 is: 10,127.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.21 : 19,011.54 = 6,753.59 : x
  2. Step 2: Convert to fraction form
    12,678.21/19,011.54 = 6,753.59/x
  3. Step 3: Cross multiply
    12,678.21x = 19,011.54 × 6,753.59
  4. Step 4: Simplify right side
    12,678.21x = 128,396,147.99
  5. Step 5: Solve for x
    x = 128,396,147.99/12,678.21
  6. Step 6: Final answer
    x = 10,127.31

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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.