Home / 12,709.73-19,039.07-7,154.75

Finding the Fourth Proportional to 12,709.73, 19,039.07 and 7,154.75

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Solution

The fourth proportional to 12,709.73, 19,039.07 and 7,154.75 is: 10,717.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.73 : 19,039.07 = 7,154.75 : x
  2. Step 2: Convert to fraction form
    12,709.73/19,039.07 = 7,154.75/x
  3. Step 3: Cross multiply
    12,709.73x = 19,039.07 × 7,154.75
  4. Step 4: Simplify right side
    12,709.73x = 136,219,655.11
  5. Step 5: Solve for x
    x = 136,219,655.11/12,709.73
  6. Step 6: Final answer
    x = 10,717.75

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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.