Home / 19,981.06-29,936.76-12,968.08

Finding the Fourth Proportional to 19,981.06, 29,936.76 and 12,968.08

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Solution

The fourth proportional to 19,981.06, 29,936.76 and 12,968.08 is: 19,429.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.06 : 29,936.76 = 12,968.08 : x
  2. Step 2: Convert to fraction form
    19,981.06/29,936.76 = 12,968.08/x
  3. Step 3: Cross multiply
    19,981.06x = 29,936.76 × 12,968.08
  4. Step 4: Simplify right side
    19,981.06x = 388,222,298.62
  5. Step 5: Solve for x
    x = 388,222,298.62/19,981.06
  6. Step 6: Final answer
    x = 19,429.51

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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.