Home / 12,911.48-19,371.54-5,122.52

Finding the Fourth Proportional to 12,911.48, 19,371.54 and 5,122.52

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Solution

The fourth proportional to 12,911.48, 19,371.54 and 5,122.52 is: 7,685.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.48 : 19,371.54 = 5,122.52 : x
  2. Step 2: Convert to fraction form
    12,911.48/19,371.54 = 5,122.52/x
  3. Step 3: Cross multiply
    12,911.48x = 19,371.54 × 5,122.52
  4. Step 4: Simplify right side
    12,911.48x = 99,231,101.08
  5. Step 5: Solve for x
    x = 99,231,101.08/12,911.48
  6. Step 6: Final answer
    x = 7,685.49

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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.