Home / 19,740.65-27,260.29-12,679.37

Finding the Fourth Proportional to 19,740.65, 27,260.29 and 12,679.37

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Solution

The fourth proportional to 19,740.65, 27,260.29 and 12,679.37 is: 17,509.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,740.65 : 27,260.29 = 12,679.37 : x
  2. Step 2: Convert to fraction form
    19,740.65/27,260.29 = 12,679.37/x
  3. Step 3: Cross multiply
    19,740.65x = 27,260.29 × 12,679.37
  4. Step 4: Simplify right side
    19,740.65x = 345,643,303.22
  5. Step 5: Solve for x
    x = 345,643,303.22/19,740.65
  6. Step 6: Final answer
    x = 17,509.22

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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.