Home / 20,992.04-28,969.26-11,560.76

Finding the Fourth Proportional to 20,992.04, 28,969.26 and 11,560.76

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Solution

The fourth proportional to 20,992.04, 28,969.26 and 11,560.76 is: 15,953.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.04 : 28,969.26 = 11,560.76 : x
  2. Step 2: Convert to fraction form
    20,992.04/28,969.26 = 11,560.76/x
  3. Step 3: Cross multiply
    20,992.04x = 28,969.26 × 11,560.76
  4. Step 4: Simplify right side
    20,992.04x = 334,906,662.24
  5. Step 5: Solve for x
    x = 334,906,662.24/20,992.04
  6. Step 6: Final answer
    x = 15,953.98

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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.