Home / 22,428.40-30,949.38-12,997.56

Finding the Fourth Proportional to 22,428.40, 30,949.38 and 12,997.56

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Solution

The fourth proportional to 22,428.40, 30,949.38 and 12,997.56 is: 17,935.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,428.40 : 30,949.38 = 12,997.56 : x
  2. Step 2: Convert to fraction form
    22,428.40/30,949.38 = 12,997.56/x
  3. Step 3: Cross multiply
    22,428.40x = 30,949.38 × 12,997.56
  4. Step 4: Simplify right side
    22,428.40x = 402,266,423.51
  5. Step 5: Solve for x
    x = 402,266,423.51/22,428.40
  6. Step 6: Final answer
    x = 17,935.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.