Home / 20,191.34-30,274.05-13,257.74

Finding the Fourth Proportional to 20,191.34, 30,274.05 and 13,257.74

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Solution

The fourth proportional to 20,191.34, 30,274.05 and 13,257.74 is: 19,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.34 : 30,274.05 = 13,257.74 : x
  2. Step 2: Convert to fraction form
    20,191.34/30,274.05 = 13,257.74/x
  3. Step 3: Cross multiply
    20,191.34x = 30,274.05 × 13,257.74
  4. Step 4: Simplify right side
    20,191.34x = 401,365,483.65
  5. Step 5: Solve for x
    x = 401,365,483.65/20,191.34
  6. Step 6: Final answer
    x = 19,878.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.