Home / 20,956.75-28,927.01-13,423.34

Finding the Fourth Proportional to 20,956.75, 28,927.01 and 13,423.34

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Solution

The fourth proportional to 20,956.75, 28,927.01 and 13,423.34 is: 18,528.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.75 : 28,927.01 = 13,423.34 : x
  2. Step 2: Convert to fraction form
    20,956.75/28,927.01 = 13,423.34/x
  3. Step 3: Cross multiply
    20,956.75x = 28,927.01 × 13,423.34
  4. Step 4: Simplify right side
    20,956.75x = 388,297,196.29
  5. Step 5: Solve for x
    x = 388,297,196.29/20,956.75
  6. Step 6: Final answer
    x = 18,528.50

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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.