Home / 18,875.63-28,286.58-13,906.19

Finding the Fourth Proportional to 18,875.63, 28,286.58 and 13,906.19

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Solution

The fourth proportional to 18,875.63, 28,286.58 and 13,906.19 is: 20,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,875.63 : 28,286.58 = 13,906.19 : x
  2. Step 2: Convert to fraction form
    18,875.63/28,286.58 = 13,906.19/x
  3. Step 3: Cross multiply
    18,875.63x = 28,286.58 × 13,906.19
  4. Step 4: Simplify right side
    18,875.63x = 393,358,555.93
  5. Step 5: Solve for x
    x = 393,358,555.93/18,875.63
  6. Step 6: Final answer
    x = 20,839.49

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1.5x scale

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.