Home / 19,719.76-27,206.68-13,008.64

Finding the Fourth Proportional to 19,719.76, 27,206.68 and 13,008.64

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Solution

The fourth proportional to 19,719.76, 27,206.68 and 13,008.64 is: 17,947.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.76 : 27,206.68 = 13,008.64 : x
  2. Step 2: Convert to fraction form
    19,719.76/27,206.68 = 13,008.64/x
  3. Step 3: Cross multiply
    19,719.76x = 27,206.68 × 13,008.64
  4. Step 4: Simplify right side
    19,719.76x = 353,921,905.72
  5. Step 5: Solve for x
    x = 353,921,905.72/19,719.76
  6. Step 6: Final answer
    x = 17,947.58

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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.