Home / 20,958.84-28,924.44-12,009.12

Finding the Fourth Proportional to 20,958.84, 28,924.44 and 12,009.12

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Solution

The fourth proportional to 20,958.84, 28,924.44 and 12,009.12 is: 16,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.84 : 28,924.44 = 12,009.12 : x
  2. Step 2: Convert to fraction form
    20,958.84/28,924.44 = 12,009.12/x
  3. Step 3: Cross multiply
    20,958.84x = 28,924.44 × 12,009.12
  4. Step 4: Simplify right side
    20,958.84x = 347,357,070.89
  5. Step 5: Solve for x
    x = 347,357,070.89/20,958.84
  6. Step 6: Final answer
    x = 16,573.30

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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.