Home / 18,684.28-25,783.14-10,300.78

Finding the Fourth Proportional to 18,684.28, 25,783.14 and 10,300.78

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Solution

The fourth proportional to 18,684.28, 25,783.14 and 10,300.78 is: 14,214.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.28 : 25,783.14 = 10,300.78 : x
  2. Step 2: Convert to fraction form
    18,684.28/25,783.14 = 10,300.78/x
  3. Step 3: Cross multiply
    18,684.28x = 25,783.14 × 10,300.78
  4. Step 4: Simplify right side
    18,684.28x = 265,586,452.85
  5. Step 5: Solve for x
    x = 265,586,452.85/18,684.28
  6. Step 6: Final answer
    x = 14,214.43

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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.