Home / 19,558.89-26,979.75-12,488.81

Finding the Fourth Proportional to 19,558.89, 26,979.75 and 12,488.81

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Solution

The fourth proportional to 19,558.89, 26,979.75 and 12,488.81 is: 17,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,558.89 : 26,979.75 = 12,488.81 : x
  2. Step 2: Convert to fraction form
    19,558.89/26,979.75 = 12,488.81/x
  3. Step 3: Cross multiply
    19,558.89x = 26,979.75 × 12,488.81
  4. Step 4: Simplify right side
    19,558.89x = 336,944,836.70
  5. Step 5: Solve for x
    x = 336,944,836.70/19,558.89
  6. Step 6: Final answer
    x = 17,227.20

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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.