Home / 19,314.13-28,921.64-13,382.59

Finding the Fourth Proportional to 19,314.13, 28,921.64 and 13,382.59

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Solution

The fourth proportional to 19,314.13, 28,921.64 and 13,382.59 is: 20,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,314.13 : 28,921.64 = 13,382.59 : x
  2. Step 2: Convert to fraction form
    19,314.13/28,921.64 = 13,382.59/x
  3. Step 3: Cross multiply
    19,314.13x = 28,921.64 × 13,382.59
  4. Step 4: Simplify right side
    19,314.13x = 387,046,411.40
  5. Step 5: Solve for x
    x = 387,046,411.40/19,314.13
  6. Step 6: Final answer
    x = 20,039.55

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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.