Home / 20,245.12-27,937.56-12,695.50

Finding the Fourth Proportional to 20,245.12, 27,937.56 and 12,695.50

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Solution

The fourth proportional to 20,245.12, 27,937.56 and 12,695.50 is: 17,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.12 : 27,937.56 = 12,695.50 : x
  2. Step 2: Convert to fraction form
    20,245.12/27,937.56 = 12,695.50/x
  3. Step 3: Cross multiply
    20,245.12x = 27,937.56 × 12,695.50
  4. Step 4: Simplify right side
    20,245.12x = 354,681,292.98
  5. Step 5: Solve for x
    x = 354,681,292.98/20,245.12
  6. Step 6: Final answer
    x = 17,519.35

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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.