Home / 12,922.80-19,280.81-11,519.52

Finding the Fourth Proportional to 12,922.80, 19,280.81 and 11,519.52

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Solution

The fourth proportional to 12,922.80, 19,280.81 and 11,519.52 is: 17,187.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,922.80 : 19,280.81 = 11,519.52 : x
  2. Step 2: Convert to fraction form
    12,922.80/19,280.81 = 11,519.52/x
  3. Step 3: Cross multiply
    12,922.80x = 19,280.81 × 11,519.52
  4. Step 4: Simplify right side
    12,922.80x = 222,105,618.81
  5. Step 5: Solve for x
    x = 222,105,618.81/12,922.80
  6. Step 6: Final answer
    x = 17,187.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.