Home / 13,309.65-19,964.48-10,390.41

Finding the Fourth Proportional to 13,309.65, 19,964.48 and 10,390.41

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Solution

The fourth proportional to 13,309.65, 19,964.48 and 10,390.41 is: 15,585.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.65 : 19,964.48 = 10,390.41 : x
  2. Step 2: Convert to fraction form
    13,309.65/19,964.48 = 10,390.41/x
  3. Step 3: Cross multiply
    13,309.65x = 19,964.48 × 10,390.41
  4. Step 4: Simplify right side
    13,309.65x = 207,439,080.68
  5. Step 5: Solve for x
    x = 207,439,080.68/13,309.65
  6. Step 6: Final answer
    x = 15,585.62

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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.