Home / 19,788.71-27,293.46-12,620.81

Finding the Fourth Proportional to 19,788.71, 27,293.46 and 12,620.81

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Solution

The fourth proportional to 19,788.71, 27,293.46 and 12,620.81 is: 17,407.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.71 : 27,293.46 = 12,620.81 : x
  2. Step 2: Convert to fraction form
    19,788.71/27,293.46 = 12,620.81/x
  3. Step 3: Cross multiply
    19,788.71x = 27,293.46 × 12,620.81
  4. Step 4: Simplify right side
    19,788.71x = 344,465,593.81
  5. Step 5: Solve for x
    x = 344,465,593.81/19,788.71
  6. Step 6: Final answer
    x = 17,407.18

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1.5x scale

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.