Home / 18,783.59-28,164.85-12,867.15

Finding the Fourth Proportional to 18,783.59, 28,164.85 and 12,867.15

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Solution

The fourth proportional to 18,783.59, 28,164.85 and 12,867.15 is: 19,293.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.59 : 28,164.85 = 12,867.15 : x
  2. Step 2: Convert to fraction form
    18,783.59/28,164.85 = 12,867.15/x
  3. Step 3: Cross multiply
    18,783.59x = 28,164.85 × 12,867.15
  4. Step 4: Simplify right side
    18,783.59x = 362,401,349.68
  5. Step 5: Solve for x
    x = 362,401,349.68/18,783.59
  6. Step 6: Final answer
    x = 19,293.51

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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.