Home / 20,736.95-28,617.50-12,784.37

Finding the Fourth Proportional to 20,736.95, 28,617.50 and 12,784.37

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Solution

The fourth proportional to 20,736.95, 28,617.50 and 12,784.37 is: 17,642.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.95 : 28,617.50 = 12,784.37 : x
  2. Step 2: Convert to fraction form
    20,736.95/28,617.50 = 12,784.37/x
  3. Step 3: Cross multiply
    20,736.95x = 28,617.50 × 12,784.37
  4. Step 4: Simplify right side
    20,736.95x = 365,856,597.35
  5. Step 5: Solve for x
    x = 365,856,597.35/20,736.95
  6. Step 6: Final answer
    x = 17,642.74

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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.