Home / 18,735.28-28,102.88-5,587.32

Finding the Fourth Proportional to 18,735.28, 28,102.88 and 5,587.32

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Solution

The fourth proportional to 18,735.28, 28,102.88 and 5,587.32 is: 8,380.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.28 : 28,102.88 = 5,587.32 : x
  2. Step 2: Convert to fraction form
    18,735.28/28,102.88 = 5,587.32/x
  3. Step 3: Cross multiply
    18,735.28x = 28,102.88 × 5,587.32
  4. Step 4: Simplify right side
    18,735.28x = 157,019,783.48
  5. Step 5: Solve for x
    x = 157,019,783.48/18,735.28
  6. Step 6: Final answer
    x = 8,380.97

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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.