Home / 13,926.12-20,836.80-8,570.70

Finding the Fourth Proportional to 13,926.12, 20,836.80 and 8,570.70

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Solution

The fourth proportional to 13,926.12, 20,836.80 and 8,570.70 is: 12,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.12 : 20,836.80 = 8,570.70 : x
  2. Step 2: Convert to fraction form
    13,926.12/20,836.80 = 8,570.70/x
  3. Step 3: Cross multiply
    13,926.12x = 20,836.80 × 8,570.70
  4. Step 4: Simplify right side
    13,926.12x = 178,585,961.76
  5. Step 5: Solve for x
    x = 178,585,961.76/13,926.12
  6. Step 6: Final answer
    x = 12,823.81

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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.