Home / 20,956.04-28,924.38-12,008.78

Finding the Fourth Proportional to 20,956.04, 28,924.38 and 12,008.78

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Solution

The fourth proportional to 20,956.04, 28,924.38 and 12,008.78 is: 16,575.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.04 : 28,924.38 = 12,008.78 : x
  2. Step 2: Convert to fraction form
    20,956.04/28,924.38 = 12,008.78/x
  3. Step 3: Cross multiply
    20,956.04x = 28,924.38 × 12,008.78
  4. Step 4: Simplify right side
    20,956.04x = 347,346,516.06
  5. Step 5: Solve for x
    x = 347,346,516.06/20,956.04
  6. Step 6: Final answer
    x = 16,575.01

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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.