Home / 20,069.76-27,695.20-11,117.12

Finding the Fourth Proportional to 20,069.76, 27,695.20 and 11,117.12

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Solution

The fourth proportional to 20,069.76, 27,695.20 and 11,117.12 is: 15,341.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,069.76 : 27,695.20 = 11,117.12 : x
  2. Step 2: Convert to fraction form
    20,069.76/27,695.20 = 11,117.12/x
  3. Step 3: Cross multiply
    20,069.76x = 27,695.20 × 11,117.12
  4. Step 4: Simplify right side
    20,069.76x = 307,890,861.82
  5. Step 5: Solve for x
    x = 307,890,861.82/20,069.76
  6. Step 6: Final answer
    x = 15,341.03

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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.