Home / 13,523.78-20,285.45-4,645.28

Finding the Fourth Proportional to 13,523.78, 20,285.45 and 4,645.28

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Solution

The fourth proportional to 13,523.78, 20,285.45 and 4,645.28 is: 6,967.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,523.78 : 20,285.45 = 4,645.28 : x
  2. Step 2: Convert to fraction form
    13,523.78/20,285.45 = 4,645.28/x
  3. Step 3: Cross multiply
    13,523.78x = 20,285.45 × 4,645.28
  4. Step 4: Simplify right side
    13,523.78x = 94,231,571.95
  5. Step 5: Solve for x
    x = 94,231,571.95/13,523.78
  6. Step 6: Final answer
    x = 6,967.84

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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.