Home / 15,486.39-23,112.55-13,991.71

Finding the Fourth Proportional to 15,486.39, 23,112.55 and 13,991.71

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Solution

The fourth proportional to 15,486.39, 23,112.55 and 13,991.71 is: 20,881.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.39 : 23,112.55 = 13,991.71 : x
  2. Step 2: Convert to fraction form
    15,486.39/23,112.55 = 13,991.71/x
  3. Step 3: Cross multiply
    15,486.39x = 23,112.55 × 13,991.71
  4. Step 4: Simplify right side
    15,486.39x = 323,384,096.96
  5. Step 5: Solve for x
    x = 323,384,096.96/15,486.39
  6. Step 6: Final answer
    x = 20,881.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.